Chrome Industries Urban Ex 20L Pack vs Mountainsmith Zerk 20 UL Daypack
The Chrome Industries Urban Ex 20L Pack is 20L and 0.8kg1.8lb; the Mountainsmith Zerk 20 UL Daypack is 20L and 0.79kg1.7lb. The Mountainsmith Zerk 20 UL Daypack is 0.01kg0lb lighter. The Chrome Industries Urban Ex 20L Pack costs $29.94999999999999 less. The Chrome Industries Urban Ex 20L Pack fits the carry-on limit of 35 of 36 major airlines and the Mountainsmith Zerk 20 UL Daypack fits 36; under the seat, 0 and 1 of 26.
| Spec | Chrome Industries Urban Ex 20L Pack | Mountainsmith Zerk 20 UL Daypack |
|---|---|---|
| Price | $150Best | $179.95 |
| Volume | 20L | 20L |
| Expands to | 25L | 23L |
| Weight | 0.8kg1.8lb | 0.79kg1.7lbBest |
| Carry-on compliance | 97% | 100%Best |
| Personal-item compliance | 0% | 4%Best |
| Dimensions | 53.3×29.2×12.7cm21×11.5×5in | 45.7×25.4×15.2cm18×10×6in |
| Laptop | 15" | no laptop sleeve |
| Compartments | 1 | n/a |
| Bottle pockets | n/a | 2 |
| Opening | Roll-top, Waterproof rolltop with magnetic top close | Roll-top, Roll top closure with V-strap compression |
| Warranty | Lifetime | Lifetime |
| Torso length | n/a | 38.1 to 48.3cm (15 to 19in) |
| Organizer | No | No |
| Shoe compartment | No | No |
| Hydration sleeve | No | Yes |
| Frame sheet | No | Removable |
| Water-resistant | Yes | No |
| Rain cover | No | No |
| MOLLE | No | No |
| Hip belt | No | Removable |
| Sternum strap | No | Yes |
| Load lifters | No | No |
| Shoulder strap | No | No |
| Luggage pass-through | No | No |
| Camera compartment | No | No |
| Material | 500D nylon with PU surface coating and TPU backing, 150D recycled polyester liner, welded seams | 210D and 100D Robic nylon X-Grid Extreema (UHMWPE) ripstop with UTS coating, 840D x 100D stretch mesh, 150D polyester liner |
| Last checked | 2026-09 | 2026-09 |
Where their airline fit differs
| Airline | Limit | Chrome Industries Urban Ex 20L Pack | Mountainsmith Zerk 20 UL Daypack |
|---|---|---|---|
| Frontier Airlines | Personal item | Too big | Fits |
| Qatar Airways | Carry-on | Too big | Fits |
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Specs come from each brand's own product page. Fit uses listed dimensions in any orientation. How we score carry-on fit.