Peak Design BTR-30-SG-1 vs Bellroy Transit
Written by John Wren|

Choose Peak Design style BTR-30-SG-1, ASIN B09RZLGXFF, for the sage pack. The description table says 27 liters standard, 33 liters expanded, 1.44 kilograms, and a laptop up to 15.75 inches. Choose the black Bellroy Transit, ASIN B07XY9V8MV, for the 28-liter feature and the 16-inch laptop in the title. The compatible-device cell says 15 inches. The special-feature cell says TSA Approved Lock. The feature list does not describe a lock.
Key takeaways
- BTR-30-SG-1's table says 27 liters standard and 33 liters expanded, at 1.44 kilograms.
- The Bellroy features say 28 liters and a 16-inch laptop. The device cell says 15 inches.
- The Bellroy special-feature cell says TSA Approved Lock. The feature list does not describe a lock.
- This page does not embed a video. No clip names style BTR-30-SG-1 and this black Transit.
Buy the Peak Design Travel Backpack 30L in sage, style BTR-30-SG-1, ASIN B09RZLGXFF, when you want the pack whose model cell says BTR-30-SG-1 and whose description table says 27 liters standard and 33 liters expanded, at 1.44 kilograms. Buy the Bellroy Transit Backpack in black, ASIN B07XY9V8MV, when you want the 28-liter pack whose features print 21.3 by 15.4 by 7.1 inches and a 16-inch laptop, and when you will ignore a compatible-device cell that says 15 inches and a special-feature cell that says TSA Approved Lock. These are carry-on backpacks. They are not the same liter, and the Bellroy card does not agree with itself about the laptop.
Short version. An Osprey Farpoint 40 and a Cotopaxi Allpa 35 are the larger travel packs. Peak Design packing cubes and Eagle Creek Pack-It Isolate cubes are what goes inside. A Peak Design tech pouch and a Bellroy tech kit are the small organizers, not these backpacks. A Samsonite Freeform and a Travelpro Maxlite 5 are wheeled carry-ons. A Base Camp duffel and a Black Hole duffel are duffels. A 30-liter backpack is the bag you wear. Match the style number before you match the word travel.
The Peak Design card is the sage 30-liter. The brand is Peak Design. The model is BTR-30-SG-1. The ASIN is B09RZLGXFF. The UPC is 818373022778. The color cell says Sage. The material cell says Nylon. The style name says 30 L Travel Backpack. One silhouette cell on the extract says Satchel, which is the wrong word for a backpack and a cell you should throw out. The features say the pack expands from 27 to 33 liters, that the shell is weatherproof 400D recycled nylon, that the zipper is a number-10 UltraZip, that the shoulder straps tuck away, that there is a luggage pass-through, grab handles, and external carry straps, and that a rear hatch and a top pocket organize the bag. The description table is more specific than the features. It lists capacity as 27 liters standard and 33 liters expanded, weight as 1.44 kilograms or 3.17 pounds, external dimensions of 53 by 33 by 18 centimeters standard and 20 centimeters deep when expanded, a laptop up to 40 by 29.5 by 4 centimeters, which the table calls 15.75 by 11.6 by 1.6 inches, a tablet pocket, three packing-cube units, and a carry-on mark. The box list in that table is the pack, two cord hooks, and a sternum strap.
1.44 kilograms is the description table. A different Peak Design ASIN, the black style BTR-30-BK-2, has printed an item-weight cell of 0.15 grams on one product-information extract. Fifteen hundredths of a gram is not a backpack. Do not import 0.15 grams onto BTR-30-SG-1, and do not import it onto any pack you intend to wear. This page's order is the sage style, whose description table says 3.17 pounds. Satchel in a silhouette cell is the same kind of broken field as that 0.15-gram weight, on a different row. The color cell says Sage. A black pack in the box is BTR-30-BK-2 or another style, not this ASIN. 400D recycled nylon is a feature. The material cell says Nylon and stops. 400D is the feature, not the cell. Weatherproof in the feature is not an IP code. A rain jacket is a different product. The tuck-away straps are the feature that lets the pack ride on a roller bag without straps dragging. The luggage pass-through is the sleeve. Both are in the features. Neither is a claim that every airline calls 53 centimeters a personal item. The table's carry-on mark is the table's mark. Your ticket is the rule.
The Bellroy card is the black Transit. The brand is Bellroy. The title says Transit Backpack, a 16-inch laptop, compression straps, an adjustable sternum strap, a contoured back panel, and organization pockets, in black. The ASIN is B07XY9V8MV. The model cell says Bellroy Transit Backpack, which is the product name and not a style code like BTBA. The color cell says Black. The material cell says Polyester. The compatible-device maximum says 15 inches. The special-feature cell says TSA Approved Lock. The backpack-design cell says Laptop Backpack. The features say a rear quick-access pocket for a 16-inch laptop, compression straps in the main compartment, a mesh pocket and a small zip pocket, a front pocket with a key clip, a sunglasses pocket, side pockets for a bottle or a passport, padded straps, a sternum strap, an AirTag pocket, water-resistant recycled fabric, coated zippers, and a size of 28 liters at 21.3 by 15.4 by 7.1 inches, or 540 by 390 by 180 millimeters. One feature sentence trails off at the word warranty and does not finish. Do not invent the warranty term that sentence failed to print.
Sixteen inches in the title and the features, and 15 inches in the compatible-device cell, are the conflict. A 16-inch laptop and a 15-inch maximum cannot both be the limit. The Peak Design table is labeled, at 15.75 inches for the laptop it claims. The Bellroy card gives you two ceilings. Measure your laptop. If it is over 15 inches and under 16, you are in the gap the card created. Do not assume the feature wins until the pocket accepts the laptop you own. TSA Approved Lock in the special-feature cell is the other broken field. The features describe coated zippers, a key clip, and an AirTag pocket. They do not describe a lock, a TSA key, or a combination. An AirTag pocket is not a lock. If the bag arrives with no lock, the special-feature cell was wrong and the features were the accurate list. A charcoal Transit, ASIN B07YBDMNXH, prints model BTBA-CHA-210, a weight of 2.59 pounds, and dimensions of 20.47 by 5.51 by 14.96 inches. Those are a different color's numbers. 5.51 inches of depth does not match this black card's 7.1-inch feature. Do not paste the charcoal dimensions onto black. A marine-blue ASIN prints style BTBA-MBL-213 and a pattern cell that says Checkered. That pattern cell is not this black card either.
Twenty-eight liters is the Bellroy feature. Twenty-seven to 33 is the Peak Design table. At the Peak Design's standard size, the Bellroy is the slightly larger claim. Expanded, the Peak Design table claims 33 liters and the Bellroy does not claim an expansion. The Bellroy's 21.3-inch height is taller than the Peak Design table's 53 centimeters, which is 20.9 inches. The Bellroy's 7.1-inch depth is close to the Peak Design's 18-centimeter standard depth, which is about 7.1 inches, and smaller than the expanded 20 centimeters. Those comparisons use the Bellroy feature and the Peak Design table. They are not one shared cell. A satchel cell does not change the Peak Design dimensions. A 15-inch device cell does not change the Bellroy's 16-inch sentence. You still have to pick which sentence you are willing to be wrong about.

| Job | Peak Design BTR-30-SG-1 | Bellroy Transit B07XY9V8MV | Buy |
|---|---|---|---|
| What you are holding | Sage 30 L travel backpack, style BTR-30-SG-1 | Black Transit Backpack. Model cell is the name, not a BTBA code. | Match sage to BTR-30-SG-1. Match black to this ASIN, not to a charcoal style code. |
| Volume | Table says 27 L standard, 33 L expanded. | Feature says 28 L. No expansion figure. | Peak Design if you want the expansion written down. Bellroy if 28 liters is the one number you wanted. |
| Laptop | Table says up to 15.75 inches. | Title and features say 16 inches. Device cell says 15 inches. | Peak Design if you want one labeled laptop size. |
| Weight | Table says 1.44 kg, 3.17 lb. | No weight cell on this black ASIN. | Do not import 0.15 grams from the black Peak Design ASIN, or 2.59 pounds from the charcoal Bellroy. |
| Shell | Feature says 400D recycled nylon. Cell says Nylon. | Cell says Polyester. Features say recycled water-resistant fabric. | Read the tag if the fiber matters. |
| Odd cell | Silhouette cell says Satchel. | Special feature says TSA Approved Lock. Features do not describe a lock. | Throw both cells out. |
Who should buy the sage 30L, and who should buy the Transit?
Buy BTR-30-SG-1 if you want the sage pack, the 27-to-33-liter table, the 3.17-pound table, the labeled 15.75-inch laptop, the luggage pass-through, and the tuck-away straps, and if you will throw out a silhouette cell that says Satchel. Buy B07XY9V8MV if you want the black Transit, the 28-liter feature, the 21.3 by 15.4 by 7.1 inch feature, the organization the features list, and a laptop pocket you have tested against your own computer, and if you will throw out the 15-inch device cell or the 16-inch sentence once you know which one the pocket obeys, and you will throw out TSA Approved Lock. Buy the Peak Design if you already own the packing cubes and you want the three-unit claim in the table. Buy the Bellroy if you want the key clip, the passport pockets, and the AirTag pocket the features name, and you do not need a printed expansion.
Do not buy the black Peak Design because you liked the sage photo. The style number is BTR-30-SG-1. Do not buy the charcoal Transit and expect this black card's 7.1-inch depth. Do not buy either pack as a 40-liter Farpoint. That pack is a different article. Do not buy either one as a personal item on every airline. The dimensions are the cards. The gate agent is the measurement that counts. A 21.3-inch bag is a comfortable personal item on some tickets and too tall on others. The cards do not print your airline.
What is BTR-30-SG-1 actually for?
This card is one sage travel backpack, style BTR-30-SG-1, ASIN B09RZLGXFF, UPC 818373022778. Use the description table for the liters, the weight, the external size, and the laptop. Use the features for the 400D shell, the UltraZip, the pass-through, and the tuck-away straps. Use neither the satchel cell nor the 0.15-gram weight from the black style. The three packing units are the table's claim about Peak Design's own cubes. Other cubes may fit. The table does not promise they will. The sternum strap and two cord hooks are the box list in the table. If they are missing, that is a packing miss, not a change in liters. Weatherproof 400D is a fabric claim. Hose-test it in a shower if a storm matters, and do not cite an IP code the card does not have. The rear hatch is the feature that lets you open the back of the pack like a suitcase. It is the point of this bag compared with a top-loader daypack. The Daylite comparison on this site is a different pack.
Sage is the color cell. The photo should be the gray-green the listing shows. A black pack is the other style number. 3.17 pounds is the empty pack in the table. It is not the weight at the gate after you add a laptop and three cubes. Weigh the loaded bag. The table cannot do that for you.
What is the black Transit actually for?
This card is one black Bellroy Transit Backpack, ASIN B07XY9V8MV, polyester in the material cell, laptop backpack in the design cell, 28 liters and 21.3 by 15.4 by 7.1 inches in the features. Use the feature list for the pockets: rear laptop access, compression straps, key clip, sunglasses pocket, side pockets, sternum strap, AirTag pocket. Use the title's 16-inch laptop only after the 15-inch device cell has lost the argument in your own doorway, with your own laptop in the pocket. Use nothing in the special-feature cell until you find a lock. The unfinished warranty sentence stays unfinished. A 3-year or a 6-year warranty on another color's listing is that listing. This black extract does not complete the sentence. The recycled-fabric feature and the polyester cell can both be true if the polyester is the recycled fabric. The card does not print a percentage of recycled content. Do not invent one.
The model cell will not give you BTBA-anything. If you need a style code for a warranty claim, it is not in the model cell this page quotes. The tag in the pack may have it. The charcoal card's BTBA-CHA-210 is not authority for the black pack. 28 liters is the capacity claim. It does not expand in any sentence on this card. If you need more than 28, the Peak Design table is the one that claims 33 expanded, and you should buy that pack instead of hoping the Transit stretches.
How do you pack them without mixing the two cards?
Pack the Peak Design to the 27-liter standard shape if you care about the external depth of 18 centimeters, and expand it only when you accept 20 centimeters. Put the laptop in the sleeve the table sizes at 15.75 inches. Put three of that brand's packing units in if you are testing the table's claim, and stop when the zipper strains. Pack the Bellroy to the pockets the features name, and put the laptop in the rear pocket only if it fits the pocket you have, not the larger of the two numbers on the card. Put the AirTag in the pocket the features name. Do not call that pocket a TSA lock. Put a passport in the side pocket the features name, and do not assume a side pocket is hidden if you have not looked at the bag.
Neither card prints a rain cover. Weatherproof and water-resistant are fiber claims. A day of rain is a wet laptop if the zipper is open. The coated zippers on the Bellroy feature are not a dry bag. The UltraZip on the Peak Design feature is a durability claim, not a submersion claim. Use a liner if the electronics matter. The cubes article is the liner for clothes. It is not a dry bag either.
What actually fails on these two cards?
The Peak Design card fails when Satchel is read as the product type. It fails when 0.15 grams from the black style is read as this sage pack's weight. It fails when 33 liters is quoted without the word expanded. It fails when 15.75 inches is rounded to 16 to match the Bellroy title. It fails when a black pack is accepted as BTR-30-SG-1. It fails when the carry-on mark in the table is treated as a promise from an airline.
The Bellroy card fails when 16 inches and 15 inches are averaged. It fails when TSA Approved Lock is read as a lock in the box. It fails when the charcoal card's 2.59 pounds and 5.51-inch depth are pasted onto this black ASIN. It fails when a checkered pattern cell from the marine-blue ASIN is read onto a black solid bag. It fails when an unfinished warranty sentence is completed from memory. It fails when 28 liters is treated as expandable because the other pack expands. It fails when the model cell's plain name is written down as a BTBA style code.
What is this comparison not?
This is not a 45-liter duffel review. The Base Camp and the Black Hole are duffels. This is not a roller-bag review. The Freeform and the Maxlite are rollers. This is not a claim about which bag is more comfortable. Neither card prints a load-test on a torso. This is not a price quote. The price changes. Use the buttons if you want the live listing. This is not every Peak Design color and not every Transit color. Sage BTR-30-SG-1 and black B07XY9V8MV are the two cards.
So which carry-on pack should you buy?
Buy the Peak Design if you want style BTR-30-SG-1, ASIN B09RZLGXFF, the sage color cell, the 27-to-33-liter table, the 3.17-pound table, and the labeled laptop size, and if you will throw out Satchel. Buy the Bellroy if you want ASIN B07XY9V8MV, the black Transit, the 28-liter feature, and the pocket list, and if you will throw out the device-size contradiction and the lock cell. Buy neither if you wanted a printed weight on both cards, a style code on the Bellroy model cell, or a 40-liter pack. The style number is the decision. The Bellroy's two laptop sizes are the warning.
No public clip that names BTR-30-SG-1 and also shows this black Transit turned up for this page. There is no embed and no video object. A film of a different 30-liter pack is not these two ASINs.
Frequently asked questions
Peak Design BTR-30-SG-1 or the Bellroy Transit?
BTR-30-SG-1 if you want the sage pack whose description table says 27 liters expanding to 33 at 1.44 kilograms. The black Transit, ASIN B07XY9V8MV, if you want the 28-liter feature and you will ignore a device cell that says 15 inches under a title that says 16.
What capacity does each card print?
The Peak Design description table says 27 liters standard and 33 liters expanded. The Bellroy features say 28 liters and do not print an expanded size.
What laptop size does each card print?
The Peak Design table says a laptop up to 15.75 inches. The Bellroy title and features say 16 inches. The Bellroy compatible-device cell says 15 inches. Measure the laptop against the pocket.
What does each card say the pack weighs?
The Peak Design table says 1.44 kilograms, 3.17 pounds. The black Bellroy card quoted here has no weight cell. Do not use the 0.15-gram figure from black Peak Design style BTR-30-BK-2, and do not use the charcoal Transit's 2.59 pounds.
Does the Bellroy card include a TSA lock?
The special-feature cell says TSA Approved Lock. The feature list describes zippers, a key clip, and an AirTag pocket. It does not describe a lock. An AirTag pocket is not a lock.
Does a video show both packs?
No. This page does not embed a video. No clip that names style BTR-30-SG-1 and this black Transit is on the page.


