Norco Gel Heel/Elbow Protectors, Size: SmallEconomical elbow and heel protection.Protect elbows and heels from pressure sores or skin ulceration due to shearing forces. The Gel Elbow/Heel Protector includes a removable, shock-absorbing gel pad that measures 3-1/2“ x 6-1/4“ (8.9 x 16cm). Remove gel pad from sleeve before machine washing. Sold in pairs. To size, measure circumference at heel or elbow crease. If measurement falls in between sizes, order the larger size. SizeS: circumference stretches to 9“ (23cm)M/L: circumference stretches to 11“ (28cm)XL: circumference stretches to 15“ (38cm) Product photo may not exactly match the product offered for sale. Please refer to the product description.