This is the second Topeak clip on bag I have had - the first I have had for years; and although weathered with minor tug tears at the seams it is still very functional. I am one of those who go on very long rides so I pack as much as I can rather than being caught without, and get the "Large" version to accommodate as much as possible. The only minor con is the bag is not waterproof so there is a need to use some 3M Scotchguard etc. waterproofing spray, and keep things in Ziploc bags. I hang a Cygolite Hotshot 150 off the rear loop .The price was very good, particularly with an additional discount, and the standard shipping fast.