Folding Design The folding bike bag design allows for easy storage and transport, making it an ideal accessory for outdoor cycling enthusiasts. Lightweight Despite its robust construction, the folding bike bag is surprisingly lightweight, adding minimal bulk to your cycling gear. Customizable West Biking's customizable bike storage bag ensures a perfect fit for your 27.5 inch or 700C travel bike, enhancing usability. Rainproof Material Crafted from durable nylon, this bike bag offers superior rainproof protection, keeping your MTB safe and dry during rides. Eco-friendly Designed with high-concerned chemicals-free materials, this bike bag is an eco-friendly choice for sustainable cycling.