‎polyurethane foam

100% Foam INVENTED BY A KID KID: The Comfy Cup is a soft and flexible protective athletic cup made out of impact-absorbing foam. It was designed by an 8-year-old boy to solve the problem of boys who refuse to wear a traditional hard athletic cup. The Comfy Cup provides entry-level protection to boys who are just getting used to wearing an athletic cup. The Comfy Cup--the "training bra" of athletic cups. COMFORTABLE AND COOL: Internally lined with a layer of soft foam and moisture-wicking fabric, the Comfy Cup keeps your parts both comfy and cool.