Aerodynamic styling with traditional strap mount.AttachmentsNylon Straps/BuckleCapacity0.41 L / 25 ciMaterial1200 Denier PolyesterExpandingNoSeatpost DiameterFits 27.2 - 34.9 mmAdded Features3M(TM) Reflective StripSafety Light Clip* 3M(TM) is a registered trademark of 3M Company.Size (L x W x H)16 x 8 x 7.5 cm6.3" x 3.1" x 2.9"Weight85 g / 2.99 ozArt.no.TC2471B