If you're doing any big water tandem canoeing you won't want to leave home without some flotation. These NRS Canoe Center floats fit in all whitewater tandem boats (except those with upright bracing). Cut wider at the middle than the ends to conform to most canoes. We are now using 10-gauge Urethane fabric which won't leak or delaminate! To determine the correct size of float bag for your boat, measure the inside compartment and order a bag that is slightly larger in dimensions to fill the space in your boat completely.