Mammut Nirvana 28 vs. Cotopaxi Batac 16L Daypack
Two carry-on travel backpacks, compared spec for spec.
Mammut Nirvana 28
| Capacity | 28 L |
| Weight | 1.1 kg |
| Dimensions | 50×30×19 cm |
| Airline fit | 92% |
| Price | $220 |
Feature by feature
| Mammut Nirvana 28 | Feature | Cotopaxi Batac 16L Daypack |
|---|---|---|
| Storage | ||
| 6 | Compression | N |
| None | Expanded Capacity | None |
| 1 | Opening | 0 |
| front | Passport | top |
| N | Passthrough | N |
| Carry | ||
| Y | Backpack | Y |
| Y | Hip Belt | N |
| Y | Sternum Strap | Y |
| Inside | ||
| N | Laptop | N |
| 3 | Main Compartments | 3 |
| N | Organizer | N |
| Outside | ||
| × | Hard Shell | × |
| N | Rain-fly | N |
| 2, side | Water Bottle Holder | 2, side |
| N | Water Resistant | N |
| Material | |
| 90% Polyamide, 10% Polyester | 100% deadstock nylon & polyester |
Cotopaxi Batac 16L Daypack
| Capacity | 16 L |
| Weight | 0.3 kg |
| Dimensions | 48×28×10 cm |
| Airline fit | 93% |
| Price | $70 |
Key differences between the Mammut Nirvana 28 and Cotopaxi Batac 16L Daypack
- Compression straps: 6 on the Mammut Nirvana 28; No on the Cotopaxi Batac 16L Daypack.
- Opening: Clamshell on the Mammut Nirvana 28; Other on the Cotopaxi Batac 16L Daypack.
- Passport pocket: Front on the Mammut Nirvana 28; Top on the Cotopaxi Batac 16L Daypack.
- Hip belt: Yes on the Mammut Nirvana 28; No on the Cotopaxi Batac 16L Daypack.
Both have: backpack straps, sternum strap, water bottle pockets.
Which airlines take each bag as a carry-on
We checked both bags against the carry-on size limits of 189 airlines. 173 accept both. 0 accept only the Mammut Nirvana 28, and 3 accept only the Cotopaxi Batac 16L Daypack.
Only the Cotopaxi Batac 16L Daypack fits
Great Lakes Airlines, Regional Express, Virgin Australia.
Mammut Nirvana 28 vs. Cotopaxi Batac 16L Daypack: which should you pack?
The Mammut Nirvana 28 carries 12L more than the Cotopaxi Batac 16L Daypack (28L vs. 16L), while the Cotopaxi Batac 16L Daypack is the lighter pack at 0.3kg (vs. 1.1kg). For carry-on flexibility, the Cotopaxi Batac 16L Daypack fits 93% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the Mammut Nirvana 28; if you want to travel lighter, the Cotopaxi Batac 16L Daypack is the better call.