The Trail is just the right size for the serious mountain biker, with enough space for two mountain tubes, multi-tool, patch kit, energy bar, and a couple of dollars. The entire front half of the Trail, top, bottom and sides is lined with 14 oz truck tarp to prevent wear points at the seat post or seat rails. Two top lash points allow adjustment to any seat and the quick release cinch strap is extra long to store bulky items below the bag. For on-road night safety we also added a rear strobe loop. Oh, and there’s a zipped pocket on the bottom for your keys too.