Sea to Summit Field Repair Buckles are an easy and permanent solution for broken buckles. The design allows you to repair broken buckles, using only a screwdriver. As an added benefit, there is no need to take it to have replacement buckles sewn on when back from the field. The Ladderlock-type buckle is used on tension straps, including backpack shoulder straps and load lifters. All Sea to Summit dry bags feature Field Repair Buckles.