Adjustable Heel Lifts allow you to add up to 3/8" of lift instantly or peel away one or two layers to create a 1/4" or 1/8" lift in just seconds. Resilient rubber layers maintain their corrective lift while still helping absorb shock at heel strike. Attractive leather top cover adds durability. These heel lifts are also a great progressive treatment for pelvic obliquity, plantar fasciitis and Achilles tendonitis. Use bilaterally to help relieve stress on the heel cord and plantar fascia. Use with a post-op shoe to eliminate pelvic obliquity. Not made with natural rubber latex. Specify size, see size below. Sizing: Small: fits most Women's shoe sizes, approximately 2"W x 4-1/4"L. Medium: fits larger Women's and smaller Men's shoe sizes, approximately 2-1/2" W x 4-1/2"L. Large: fits most Men's shoe sizes, approximately 3"W x 5"L.