LARGE CAPACITY: The bike frame bag is big enough to store your wallet, energy gel, inner tube, mobile phone, gloves, repair bike tool, power bank and so on. Size L: 9.25 * 4.13 * 2.55inches, Size M: 8.48 * 3.35 *2.16inches DURABLE & STEADY: The main material 840D nylon can be highly abrasion proof and durable. Stiff sidewalls help the bag retain its shape, would be very steady. Don't worry about deformation WATERPROOF: Surface material of this frame bag is TPU material, and adhensive waterproof zipper. The bag inside would not be wet, you can have a cool riding COMFORTABLE & CONVENIENT: The front bike bag has a long slim body. Proper space design make you ride more smoothly and comfortable(Your knees will not hit the frame bike bag easily). It's portable, you can take this bike pouch easily while leaving away from your bike EASY TO INSTALL: Adjustable hook and loop design, suit for more size MTB road bikes. Install and release the top tube bag quickly and without any tools