The Zygos 5.0 features a lightweight, comfortable wraparound design and an ergonomic fit harness for added stability and comfort. The new MaxO2 foam adjustable closure system can be fixed to fit the load of the pack. This innovative system allows the pack to be fitted to your body with a single touch, and just like the MaxO2 Sternum, you can secure the pack without hindering your natural breathing. 8 pockets for access during action and durable ripstop fabric reinforces stress points. Available in Three Sizes ■ Features Lightweight, soft, breathable and durable large hole mesh draws moisture away from your body to keep you dry and cool Silicone and PU coated featherweight nylon fabric resists water, abrasion and tear Max O2 foam does not restrict breathing while maintaining a stable pack Excellent elasticity and resilience shock cord for a stable run The edges are made of comfortable microfiber polyester to reduce friction on your skin and clothing. Webbing is not easy to absorb moisture. Saturated and wont weigh you down; Bartacks are sewn into stress areas for added safety; Zipper pulls feature bounce free with excellent quiet; Zigzag stitching on elastic rubber for durability, elasticity, and resilience; Bladder installation is simple, quick and easy to put in and take out medicine pockets to avoid sweat; Automatic magnetic closure allows you to quickly remove medications and essential items. Sizes: S (85 - 95 cm) cm) M: 37.4 - 37.439.4 inches (100 cm) L 39.4 - 41.3 inches (100 - 105 cm) * Chest Estimation ■ Capacity 14 L ■ Weight 386 g ■ Dimensions 39 x 35 x 7 cm