Probably the most popular style is the sled-foot trestle base. With this design, each pair of legs is put together in the form of an 'I' with two vertical bars. The leg pairs are connected by a pair of stretchers. These stretchers can be permanently fixed to the leg-pairs, or they can be made removable with tusk tenons or a bed-bolt arrangement. One of the advantages of this style is that there is no end-grain resting on the floor, so the legs are not as prone to wick-up moisture and rot.