CROCS SAFFRON WORK SHOE: This amazing slim fitting Mary Jane inspired flat features waterproof leather uppers and an ergonomic footbed which minimizes the load on feet, legs and back. Circulation nubs help stimulate blood flow and draws moisture away from foot. The innovative crocslockâ„¢ tread pattern provides excellent traction in slippery conditions and exceeds industry slip resistant standards as tested to ASTM F1667. With a secure adjustable strap this is the ultimate work shoe.