Xtouring Material and design : WOHOlong searches for the best material and components, and we spend a lot of our time sourcing and using these to continuously improve our products. Xtouring bags are made with a variety of heavy-duty double coated fabrics, using materials optimized for bikepacking, : > Body Fabrics - Double WP coated nylon / 840 denier anti-wear nylon / TPU Coated belt > Rip-stop yarn - Provides additional strength against wear and tear. > TPU/PU waterproof - Double layered waterproof and rip-stop coating to stand robust uses. With long lasting water/dirt repellent coating, mud or water won't accumulate on bags. We use taped seams for added weather-proofing with handlebar bag And saddle bag as same level as Arc'teryx. > Lightweight nylon base - Specialized compound durable yet lightweight base material. > Aluminum hooks for durability, quality and feel combined with high strength. Other materials include Duraflex buckles/clips and TPU belts to stand extreme weather, from chilling cold to burning hot. > 3MTM ScotchliteTM Reflective materials printing were used on the sides to ensure safety while riding in dark. The saddle rail locking straps, 3 point attachment system and roll top closure all work together to keep twist and sway to a minimum so you can focus on the trail ahead You can squash the bag down to 6 liters in size or you can max it out to around 8 liters. Capacity 6-8Liter Color Gray Weight 220g / 0.49 lb Size (L x W x H) 42 x 18x 7 cm / 16" x 7" x 5"