I bought new webbing that fits my existing Mission buckle but it doesn't even fit. It's too wide for a buckle so it won't slip or tighten. So if Mission changes buckle and strap sizes but doesn't specify which buckle each strap fits, don't waste your money. Just buy a brand new belt or switch brands. EDIT: I just found out there are two sizes of buckles; 35mm and 40mm. My old belt was 35mm and the new one was 40mm. MAKE SURE YOU BUY THE RIGHT BELT FOR YOUR BUCKLE! :-)