Amphipod AirFlow Trail™ Pack Color:Black/White High quality EVA foam is

High quality EVA foam is durable with excellent memory to retain shape

fast-drying 4-way stretch fabric

Flexible Arch Cushion provides the additional stability and support necessary to help maintain proper foot position

ultra-plush collar

Amphipod AirFlow Trail™ Pack Color:Black/White High quality EVA foam isBreathable and rugged, this bounce free run pack features a ripstop outer with 3D airmesh back panel and expandable storage to carry just what you need. Rugged nylon ripstop outer construction with 3 gel slots Bounce free, fully cushioned, and non chafing Fully adjustable, stretch comfort waist belt with low profile, quick release buckle Moisture resistant zippered main compartment with internal divider holds keys, phone, nutrition, and more