The Powderhound 12L winter hydration backpack features a Therminator harness that insulates the drinking tube to prevent freezing. It includes a 2-liter CRUX Reservoir with Quicklink System and 12 liters of storage for snacks and essentials. External straps carry skis A-frame or diagonally. A removable stability belt secures the pack on technical terrain, and a zippered pocket provides secure storage for keys and essentials.