THE BEST HEIGHT INCREASE INSOLES -,Adjustable Orthopedic Heel Lift Inserts are made of high quality, very soft and durable comfortable grade silicone and fabric being good for Leg Length Discrepancies,Heel Pain,Heel Spurs and Achilles tendonitis. ADJUSTABLE DESIGN - Adjustable layers allow you to build up the height by adding layers yourself. These layers can be used individually or as a combination. Each lift for heel relief the pains of your feet while adding height. (All 4 inserts =0.235"+0.235"+0.235"+0.235") All DAY COMFORT & REUSABLE-- While you go through your day. Excellent padding and support for extended standing, walking, running, hiking, dancing, or any other activity that finds you on your feet! Flexible but firm, easy to wash, and durable so you can wash and reuse them multiple times.