United by Blue (R)evolution 25L Convertible Carryall vs. Topo Designs Trip
Two carry-on travel backpacks, compared spec for spec.
United by Blue (R)evolution 25L Convertible Carryall
| Capacity | 25 L |
| Weight | 0 kg |
| Dimensions | 39×34×13 cm |
| Airline fit | 96% |
| Price | $120 |
Feature by feature
| United by Blue (R)evolution 25L Convertible Carryall | Feature | Topo Designs Trip |
|---|---|---|
| Storage | ||
| N | Compression | N |
| None | Expanded Capacity | None |
| 0 | Opening | 0 |
| front | Passport | front |
| N | Passthrough | N |
| Carry | ||
| hideable | Backpack | Y |
| N | Hip Belt | N |
| removable | Sternum Strap | N |
| Inside | ||
| 15in | Laptop | 11in |
| 2 | Main Compartments | 2 |
| N | Organizer | N |
| Outside | ||
| × | Hard Shell | × |
| N | Rain-fly | N |
| 2, side | Water Bottle Holder | N |
| Y | Water Resistant | Y |
| Material | |
Topo Designs Trip
| Capacity | 8.4 L |
| Weight | 0.5 kg |
| Dimensions | 41×21×11 cm |
| Airline fit | 96% |
| Price | $170 |
Key differences between the United by Blue (R)evolution 25L Convertible Carryall and Topo Designs Trip
- Backpack straps: Hideable on the United by Blue (R)evolution 25L Convertible Carryall; Yes on the Topo Designs Trip.
- Sternum strap: Removable on the United by Blue (R)evolution 25L Convertible Carryall; No on the Topo Designs Trip.
- Laptop sleeve: 15in on the United by Blue (R)evolution 25L Convertible Carryall; 11in on the Topo Designs Trip.
- Water bottle pockets: 2, side on the United by Blue (R)evolution 25L Convertible Carryall; No on the Topo Designs Trip.
Both have: passport pocket, water resistant.
Which airlines take each bag as a carry-on
We checked both bags against the carry-on size limits of 189 airlines. 179 accept both. 2 accept only the United by Blue (R)evolution 25L Convertible Carryall, and 2 accept only the Topo Designs Trip.
Only the United by Blue (R)evolution 25L Convertible Carryall fits
VivaColombia, Volaris.
Only the Topo Designs Trip fits
Air Niugini, Great Lakes Airlines.
United by Blue (R)evolution 25L Convertible Carryall vs. Topo Designs Trip: which should you pack?
The United by Blue (R)evolution 25L Convertible Carryall carries 16.6L more than the Topo Designs Trip (25L vs. 8.4L), and the two are closely matched on weight. For carry-on flexibility, the United by Blue (R)evolution 25L Convertible Carryall fits 96% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the United by Blue (R)evolution 25L Convertible Carryall; if you want to travel lighter, the Topo Designs Trip is the better call.