Features: Stylish and dynamic design: suitable for most mountain bikes and road bikes, 34.5*13*5.5CM/40*13.5*5.5CM 2 sizes accessible, please note whether the size is suitable for your bike. Big zippered opening mouth design for easy access, with durable zipper closure. Slim body design with high capacity to minimize the wind resistance. Water and Weather-resistant, strong and durable polyester material helps protect stored items. Fits most essentials like smartphones, wallet, keys, small bike pump, cable lock, repair tools etc. (not included) It is a sturdy and stylish style. A good complement to bicycles and a practical helper for cycling. Simple installation or disassembly: 4 wide adjustable shoulder straps for a stable and secure mounting, universal angle suitable for most bicycles' triangular frames. Specifications: Name: Bicycle Triangle Frame Bag Material: polyester Color: black Size: 34.5*13*5.5CM/40*13.5*5.5CM(optional) Package size: 40*14*6CM Package weight: 170g Package list: 1 x Bicycle Triangle Frame Bag