The Topeak DynaWedge Waterproof is a lightweight, water repellent, and aerodynamic saddle bag. It is designed to securely hold tubes, tools, and other small items. The bag is made with a moulded construction and features an elastic polyurethane fiber/EVA foam material, along with 210 Denier and 420 Denier Nylon.This weatherproof version of the DynaWedge Waterproof easily mounts to saddle rails with adhesive straps and can also be attached to the seatpost with a rubber strap. It is suitable for most types of saddle rails and fits saddle post sizes ranging from Ø25.4mm to Ø31.8mm.The Micro size of the bag measures 14x4.5x10.5cm, has a capacity of 0.35L, and weighs 66g. The Small size measures 18.5x6x14.5cm, has a capacity of 0.8L, and weighs 98g. There is also a Small Waterproof option available, which measures 14x5x10.5cm, has a capacity of 0.35L, and weighs 45g. Choose the Topeak DynaWedge Waterproof saddle bag for a sleek and practical storage solution on your bike rides.