The Topeak DynaWedge Saddle Bag is a lightweight and water repellent saddle bag that fits snugly under your saddle. It ideal for storing all those ride essentials such as inner tubes, multi-tools etc.Elastic Polyurethane Fibre / EVA Foam210 Denier / 420 Denier Nylon (weatherproof version)Easily mount to saddle rails with adhesive straps and seatpost with rubber strapSuitable for most type of saddle railsFits ø25.4 - ø31.8mmMicro: 14x4.5x10.5cm, 0.35L, 66gSmall: 18.5x6x14.5cm, 0.8L, 98gThe bag has a unique but clever centre opening which gives you quick and easy access to its contents.  The bag can be easily fitted underneath your saddle with hook and loop straps attaching it to the rails and a rubber strap securing it to your seatpost.