Great For Leg Length Discrepancies, Heel spurs, Heel Pain, Sports Injuries, and Achilles tendonitis This listing is for 1 Heel lift - Not a pair 2 removable 0.5" thick layers for optimum Heel lift customization Durable and comfortable and work great for sports shoes and dress shoes High quality rubber construction for Superb Heel Support and instantly correct leg length discrepancies Heel lifts can be used for more than just correcting leg-length discrepancy. Used in rehabilitation, heel lifts raise the heel for lower-limb swing-through and improved gait. Used bilaterally, heel lifts can help relieve stretch and strain on the Achilles tendon and calf musculature in conditions such as Achilles tendonitis, plantar fasciitis, or heel spurs. The following are recommendations for matching the correct heel lift to the needs of your patients.