Introducing Shredbak, the first-of-its-kind hydration system that's actually integrated into a mid-layer vest.  Body contact keeps water from freezing.  Low-profile design frees you up on the lift, and its top-notch construction has the rugged durability you'd expect from Camelbak.

Features:
+ Capacity: 72oz ( 2.1L )
+ Weight (Size Medium) Filled Reservoir: 5.78 lbs ( 2.62kg )
+ Breathable, comfortable mid-layer vest with two-way water-resistance and fleece lining
+ Chest Pocket makes for easy storage of bite valve
+ Wear as a spring outer layer winter mid-layer with or without reservoir
+ Innovative, integrated compartment compresses and stabilizes 72oz Camelbak Omega Hydrotanium reservoir
+ Insulated tube cover and close-to-core positioning enhances freeze resistance

Fabric:
+ Shell:  100% Polyester
+ underlayer: 75% Polyamide, 25% Elastane