Designed for travel & tough enough for all your adventures, the 35 or 40-liter Capsule Pack from San Francisco-based bag brand Aer is a hardworking companion, featuring 1680D Cordura ballistic nylon construction, YKK Aquaguard zippers, & Duraflex hardware. It boasts a duffle-style main compartment designed for modular packing, hide-away backpack straps & a shoulder strap for versatile carry, a suspended laptop pocket, and a convenient top compartment for easy access to your on-the-go essentials.