"Improve Squat Form The squat wedge trainer lifts your heels and places them at the correct angle when squatting. Your spine and joints are in the best squat position to reduce lumbar and back injuriesMulti-function The squat block is your perfect fitness companion, which can be used as a squat wedge block for physical therapy to improve ankle, knee and hip flexibility, and as a calf lift block to maximize calf stretchNon-slip surface High-density cork particles provide excellent ground grip and hold the wedge in place to prevent you from slipping when squattingEnvironmentally friendly material: Our squat wedges are made of high-density cork, providing you with a non-deformed, moisture-proof, odor-proof, wear-resistant, non-toxic and recyclable fitness accessory suitable for home or gym usePortable and sturdy This set of two cork wedge blocks comes with a carrying bag for easy transportation and storage. Each block measures 9 inches x 4.7 inches x 2.6 inches and weighs 1.5 pounds. Together, these wedge blocks can bear 1400 pounds"