Alpinestars Youth GP Plus 1-Piece Leather SuitPremium leather main chassis construction from 1. 3mm genuine bovine leather Ergonomic chassis incorporates perforated leather panels Multi panel, body mapped construction that incorporates stretch panels in the arms, knees and at the crotch Leather accordion stretch panels on the rear shoulders, knees and lumbar rear Integrated Polyethylene (PE) foam padding on the chest, hips, coccyx and back for improved comfort and fit 3D multi panel knee