Exclusive lacing system keeps the brace tighter, longer than any other brace for long-lasting support. The lacing system features two sets of eyelets in the midsection of the brace. The dual eyelets create a "pulley" effect to give you greater leverage so you can lace the brace tighter for a more effective "Ankle Lok". The dual eyelets are offset to trap the tightened laces between the inner and outer eyelets, which keeps the laces tighter longer than competitor's braces. Stainless steel spiral stays are built into the medial and lateral sides of the brace for extra support. The full elastic back ensures unrestricted blood flow to the Achilles' tendon and virtually eliminates the chance for blistering. Side stabilizer inserts are available for additional ankle support. The Stabilizers may be placed in the medial and lateral pockets on each side of the brace. Heavy-duty triple vinyl laminate construction is extremely durable, provides great ankle support and fits comfortably in most athletic shoes. Also available in a padded tongue option for greater comfort to a recently injured ankle.