Design: Convenient slip-on closure with collapsible heel Recycled polyester fleece upper with rib knit collar Soft microfiber lining for enhanced feel In-Shoe Comfort: Molded EVA midsole for optimal comfort PU footbed that responds to and cushions your foot Antimicrobial Aegis(R) treatment to minimize odor Durability & Traction: Treated topically to repel light splashes Durable rubber outsole for increased traction Additional Details: Unifi(R) polyester yarn verified by REPREVE(R)