Size: Medium Gender: Unisex Designed for insertion into the latest Alpinestars technical jackets Slim, ergonomic design Dual-density cell structure technology combines two materials to deliver lightwight impact protection with unrivaled breathability and comfort Ergonomic protection plates contour to the natural curve of the back to ensure a perfect fit while riding Lateral wings on protection plates flex to fit the movement of shoulder blades and wrap around the kidneys while in the riding position Breathable inner mesh for increased ventilation CE-certified Level 1 impact protection to prEN1621-2:2010 Fits following Jackets and many others: Carver, GP Pro 2-Piece Suits; GP Pro, Mert, Tech 1-R, Stella GP Plus Leather Jackets; Cape Town Air Drystar, Durban Gore-Tex, Koln Drystar, Long Range 2 Drystar, Lucerne Drystar, Messenger WP, T-Gasoline, T-GP Plus Air, Stella Seville, Stella T-GP Plus Air Textile Jackets, Andes Drystar.