The Topeak Elementa Strap is perfect to keep some ride essentials attached to your bike for every ride. Simply load your essentials with included straps and attach to saddle rails, seat post, or downtube with hook and loop fastening strap. Included 2 detachable nylon straps allow quick removal and access of any attached gear for trailside emergencies and repairs.Material: Polyester hook and loop fastening strap with built-in bungee strap / 2 detachable Nylon straps Attachment: Hook and loop fastening strap with anti-slip and scratch-free fabric Mount: Saddle rails, seat post or downtube Size: 72 x 3.8cm / 28" x 1.5" (L) 69 x 2.5cm / 27" x 1" (M) 50 x 2.5cm / 20" x 1" (S)Weight: 47g/1.66oz (L) 33g/1.16oz (M) 28g/0.99oz (S)