We made this gravel frame bag specifically for road frame geometry. Two parts, both parts can be used separately on the frame. If only the upper part is used, two water bottles can fit. The lower part of the frame bag is TPU nylon, two layers, the rest is one layer of woven, impregnated PTP. Both bags close with a compartmentalized, waterproof zipper. The Velcro straps are size 40 straps and provide a very strong hold. Of these, three at the top and bottom and two at the back attach the bag to the frame. When both bags are on the frame, they can be velcroed together.
Material: Polyester 30%, PVC 70%
weight: 380 g/m2