Inoc Adults Back/Spine Protector Vest Sizes S - XL Ski Skiing Snowboard Motocross Suitable for many different extreme sports, including Skiing, Snowboarding, Motorcycling, Cycling, Mountain Biking and Skating. This back protector is extremely lightweight and comfortable with a tough 30mm foam insert in the back of the vest and a small 10mm tough foam insert to protect the neck. The larger 30mm insert can be removed if required for washing. It features a zip up front, with a double velcro adjustable waist strap to ensure a good tight fit but still with full mobility..