Oceanweave 600D reclaimed fishnet polyester with waterproof polyurethane coatingWater-resistant stitched constructionHeavy duty seat rail buckle and straps, pull up to tighten3 rubberized, modular seatpost straps with Camlock, ensure things stay tight, while eliminating potential damage to clothingTop mount bungee system with wings, provides optimum stability to top loads, etcTop bungee system for additional, flexible storageSupplemental rear closure strap system provides additional supportUltra-visible rear 3M triangle logoPolypropylene plates below saddle, ensure ample leg clearance, even if heavily loadedBuilt in U-lock holder and rear light clipVelcro Straps18.1x 8.3x6.7â811 c.i.BlackXXX-Large (700+ c.i.)UPC/EAN/GTIN: 058817382420