Fiberglass cord with a Chloroprene Core covered by Nylon. COMPATIBLE MODELS:The boosted board belts come with 2pcs that's will fit your boosted board models including Boosted Boards V2, Mini S, Mini X, Boosted Boards Plus and Stealth,But not compatible with Boosted Board V1. Neoprene Body - Flexible, Durable, and is highly wear resistant Easy installation. All our products are manufactured under expert supervision and adhere to quality guidelines. you can buy high-quality skateboard products and accessories from us.