Source Brisk 2L Hydration Orange/Black - SO11415 Super low-profile and lightweight solution. Choose 2L or 3L Hydration System to better fit you size and your needs. Flat outside pocket allows storage of essentials needed on the trail. Brisk Lightweight and Low-Profile Hydration Pack 2L / 70oz Hydration A low-profile and lightweight solution for when you need to carry mainly water Brisk Hydration Pack Features Padded shoulder straps Valve Docking station Lightweight buckles Essentials compartment Insulated hydration compartment Carrying handle SOURCE Hydration Features: Widepac hydration system Helix bite valve - Comfortable valve with safety shutoff mode Co-Ex tube Triple layer taste and odour free film Glass Like Film Technology Grunge-Guard Technology Taste Free System Easy Care & Low Maintenance