We cannot deliver Oofos to P.O. Boxes.
Sizing: M=US Men's W=US Women's. Oofos Recovery thongs are amazing. Made from a soft moulding foam "OOfoam™" that hugs your feet. This foam gives an almost floating feeling, VERY comfortable and soothing. They have to be tried to understand it. Grab a pair today and see what the fuss is all about.