This is a frame bag made by Fairweather, a brand name that's auspicious for cyclists, meaning clear and sunny weather. I've used it once, but due to circumstances, I stopped riding and haven't used it since, so it's been stored away. Fairweather bags come in several variations, and this one uses X-PAC material, making it highly waterproof. How about attaching it to your gravel bike or cross bike for bicycle touring or rides? *X-PAC is a fabric developed by DIMENSION-POLYANT in the USA, known for its high waterproof and abrasion resistance. High-end outdoor brands like Mystery Ranch and Snow Peak use it in their products. Made in Japan Size: Length 25cm, Height 17cm, Width 8cm Weight: 92 grams (actual measurement) Material: X-PAC Capacity: 1.7 liters