Innovative safety vest from Db and Sage Kotsenburg. The Snow Pro Vest is a safety backpack specially designed for off-piste terrain. It was developed in collaboration with pro snowboarder Sage Kotsenburg. A special highlight of this vest is the Safeback SBX system - an innovative technology that supplies clean air in the event of an avalanche burial and can thus extend survival time by up to 90 minutes. If you activate the system by pulling the handle, SBX pumps air through the intake window on the backpack up to the outlets on the shoulder straps. You can breathe normally without any mouthpiece.