The WR1 Race weighs a mere 140 grams and is easy to carry without noticing. It allows you to carry a liter of liquid, and drinking is made easy thanks to the cleverly designed hose. The flexible material and the adjustable Velcro closure help achieve an excellent fit. The WR1 Race is an excellent choice not only for long training sessions but also for long skiing events. - Zippered main compartment for a hydration bladder - Your body warmth keeps the contents thawed - Open mesh pocket for gels, a soft bottle, etc. - Outer material made of polyester, lining material made of nylon - Insulated drinking hose and additional cover - Strap adjustment range: 65 - 105 cm - The hydration system is BPA-free