Tuli’s® Heavy-Duty Heel Cup™ is twice as thick as the Classic Heel Cup for heavy-duty protection from heel strike pain during sports activities. Absorbs the shock of daily standing or walking and returns impact energy just like the system naturally found in your feet. Cushions and elevates the heel bone and reduces pressure on the Achilles tendon, heel, plantar fascia, knees, and shins. This thoughtful design also ensures feet, knees, hips, and back are in alignment, offering maximum comfort and performance. Made from high-quality, durable molded synthetic rubber that won’t bottom out. Flexible enough to fit any closed shoe while providing enough support to keep feet comfortable and protected during any activities. Available in two sizes: Regular or Large.