Reef Ortho X Slide Women's Sandals. Your feet sent us their wishlist: Comfy, cute and light. The Ortho X slide, is all three, with adorable woven criss-crossed straps made from recycled plastic bottles, plus deep heel cupping, extra arch support, and a lightweight outsole for stability and grip. These shoes work hard so your feet can take it easy!. Enhanced Arch Support and Deep Heel Cupping. Non-marking Rubber Outsole. .