Stashpack redefines the saddle pack Specially designed for minimalist Road, Gravel and MTB riders who want to keep things dry and silent! A long strap and organized compartments provide more than enough room for tools, tubes, CO2 cartridges and other emergency gear. Plus, Oceanweave Ocean-X multi-layer fabric is made from reclaimed and recycled fishnets to help protect the world's oceans and marine life. Mounting: - Heavy-duty hook and loop-equipped webbing strap keeps things tight and quiet - Compatible with dropper seat posts. Materials: - Waterproof Oceanweave(R) Ocean-X multi-layer laminated material made from reclaimed and recycled fishnets. - Hydracore(R) liner provides an IPX3 waterproof rating Compatibility: Most bike seats and dropper posts Features: - Storage optimized for minimalist Road, Gravel, and MTB. - Narrow profile keeps load tucked up and out of the way, free of your legs and dropper posts. - Waterproof outer fabric sheds dirt and water easily and is incredibly durable. - Reliable strap mounting/compression system keeps things silent and secure. - Hook and loop strap holds canopy closed, keeping things clean and dry. - Reflective rear 3M(R) logo increases visibility at night. - Lifetime warranty Specifications: Small: - Dimensions: 13 x 7 x 7 cm (5.1 x 2.8 x 2.8 in.) / Weight: 41 g (0.09 lb.) Medium - Dimensions: 15 x 8 x 8 cm (5.9 x 3.1 x 3.1 in.) / Weight: 51 g (0.11 lb.) Large: - Dimensions: 18 x 9 x 9 cm (7.1 x 3.5 x 3.5 in.) / Weight: 58 g (0.13 lb.)