A low-profile ski hydration pack designed to be worn seamlessly under a jacket while carrying 1.5 litres (50 oz) of water. Features an insulated reservoir, insulated tube and dual sternum straps for a secure, bounce-free fit in cold winter conditions. Capacity: 1.5 L / 50 oz Reservoir: Crux reservoir for increased water flow Insulation - Reservoir Compartment: Insulated to reduce freezing Insulation - Tube & Valve: Insulated drinking tube with bite-valve cover Fit: Slim, low-profile under-jacket design Straps: Dual adjustable sternum straps Materials: Durable polyester construction with water-repellent finish Weight: Approximately 8.4 oz Gear Capacity: Minimal; designed primarily for hydration Best Use: Winter sports, skiing, snowboarding