This back protector meets the highest standards of material quality, construction, comfort, design and safety. It is certified and tested to the latest safety standards CE/EN 1621:2014 Level 2 - 4 layers 5.5mm Nitrex foam on the back - on the front and sides 2 layers 5mm. Nitrex foam 5 mm for extra protection. The front pads are removable. - High-quality YKK zip - mesh upper 1621:2014. 00% polyester front and back for maximum breathability. Lining: 85% Nylon, 15% Spandex. Very comfortable fit with elastic panels on the sides for added comfort. Slim fit for better mobility. Reflective profiles on the front for safety even in low visibility. Sizes: Children S-XL, Adults S-XLColor: Black