The WR1 Ventura is the new innovation on the ever-popular WR1 belt design. The Ventura is lighter, tighter fitting, and aluminum foil insulated! It comes standard with a 1.2L bladder and tube system. The tube is insulated for use in winter sports. It is fitted with an adjustable, velcro-strapping waistband to allow for quick adjustment and removal. Coxa prides themselves on their innovative anti-bounce design, and this one is the best they have so far!