The Swede-O® Arch Lok® provides critical ankle and arch support. The modified orthotic footplate and ankle uprights help prevent inversion and eversion injuries without significant reduction of normal plantar and dorsiflexion so there is no negative impact to movement or performance. This brace fits comfortably over the ankle and is secured with three adjustable straps. Once the brace is fit, easily apply and remove the brace using the single back strap. Use this product for patients with mild to moderate PTTD (Posterior Tibial Tendon Dysfunction) and ankle instability. Specify right or left.