Alpinestars Stella Flex-AST 5 Jeans The Alpinestars Flex Ast-5 Jeans combine advanced protection with modern casual style. Built from single-layer denim with CE-rated Class A protection, they provide lightweight comfort and lasting durability for everyday riding. Cut slim, the Stella Flex AST 5 jeans deliver comfort on and off the bike. Lightweight and flexible Alpinestars Nucleon Flex Plus knee protectors round out a design focused on protection and easy wear. Fit: Slim fit High waist Construction: Fabric: 53 cotton, 30 polyester, 17 polyamide Durable multi-stretch denim construction Reinforced knee and hip areas provide additional durability in critical wear zones Hidden dual seams and overlock stitching Protection & Safety: Nucleon Flex CE Level 1 knee protectors included 3 position knee protector pockets Approved to 17092-4:2020 as a CE Class A garment Comfort: Raised back waist for enhanced coverage Pockets: Traditional five-pocket construction Other Features: Belt loops