A weather-resistant, bike-packing-inspired / urban-inspired seat pack bag Ideal for day-trippers or commuting trunk bag users who don't want to use a rack. Construction - OCEANWEAVE(R) 600D reclaimed fishnet polyester with waterproof polyurethane coating. - Water-resistant stitched construction. Mounting System - Heavy-duty seat rail buckle and straps, pull up to tighten. - 2 rubberized, modular seatpost straps with CAMLOCK, ensure things stay tight while eliminating potential damage to clothing. Features: - Supplemental rear closure strap system provides additional support. - Ultra-visible rear 3M(R) triangle logo. - Polypropylene plates below saddle, ensure ample leg clearance, even if heavily loaded. - Rear light clip. - Lifetime warranty