The CamelBak Arete 8 Sling is a new lightweight sling pack for hikers. This cross-body sling can be easiy tossed over either shoulder, and the Stretch Overflow Pocket lets you quickly stash another layer on the outside. The 3D Vent Mesh Harness and breathable back panel cools you down and ventilates where you need it most. This new hiking sling pack is made from recycled materials, giving it a light weight while still being durable and reliable. As always CamelBak's number one priority is keeping you hydrated on the trail so the pack includes the 0.6 L Tritan Renew Bottle. Made from recycled materials and safer chemicals Designed with lightweight and breathable materials Left or right shoulder carry so you can switch it up 1.5 L reservoir compatible pocket on shoulder strap BPA/BPS/BPF free for added safety Summer 2022 product Equipped With 3D Mesh 3D Mesh is a lightweight, cushioned mesh that maximizes airflow and reduces chafing for cooler, more comfortable activity. Tritan Tritan is a stain-resistant and taste-free plastic that is 100% free of bisphenol A (BPA), bisphenol S (BPS), and bisphenol F (BPF).