Birkenstock Birko-Sport Arch Support from Blue Closed-cell Foam/Cork
This two piece full length system provides support and cushioning to the entire foot. The 3/4 length lightweight contoured base is made of cork and EVA. The molded top piece fits perfectly inside the shell providing an absorbing surface. Both pieces can be worn separately.
The cork support stabilizes the metatarsal and longitudinal arches. Best worn with sport shoes, ski boots and work shoes. Recommended for low to average arch feet.