The back has been reinforced, to keep its shape. Heavy duty stitching and stainless steel rivets hold them tightly together. Two stainless steel tie downs give you a way to secure it to your bike. If you love old school, you are going to want these bags. Fox Creek Leather has provided another quality choice to fill your riding needs. For quality, price, and down home service that you will not find anywhere else, Y’all gotta check out Fox Creek Leather. Tell them Q-Ball sent you.