The Birkenstock Lutry is a slipper that can be worn as a backstrap style or as an open clog. thanks to the flexible ankle strap. This version features our classic removable footbed. which replicates the natural print made by a foot walking on sand. The upper is made from especially soft suede. which hugs the foot like a second skin. The footbed in this model is interchangeable and the can be purchased separately.