The Arete Sling 8 hiking backpack with a unisex fit created by Camelbak is one of the best companions. Its mesh shoulder strap molds to your torso during mountain activities. Additionally, its design includes a water bottle accessible at any time of the day and is compatible with a hydration reservoir. Breathable mesh back and shoulder straps Sling bag Includes a 0.6 L Carry Cap bottle with protective cap Expandable overflow pocket Compatible with 1.5 L hydration reservoirs Storage pocket on the shoulder strap Camelbak Arete Sling 8 - Walking backpack | Hardloop