AirSport+® Ankle Brace
Aircast®
Protect from ankle rollover during sports with a dialed-in BOA® Fit System and supportive stirrup shell that helps limit side-to-side motion. Delivers consistent moderate support for sports and daily activity.
Recommended for:
- Inversion and eversion due to ankle ligament tears
- Moderate to severe ankle sprains
- Prevention of injury
- Post-operative use
- Chronic ankle ligament instability
Find the Right Fit:
- Use the size chart to match your shoe size to the correct brace size.
- If you land between sizes, choose the larger option.
| Size | US Men's Shoe Size | US Women's Shoe Size |
|---|---|---|
| XS | <3 | <5 |
| S | 3-5 | 5-6.5 |
| M | 5-8.5 | 6.5-10 |
| L | 8.5-12 | 10-13.5 |
| XL | >12 | >13.5 |
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Features and Benefits:
Dynamic Rollover Protection
Semi-rigid stirrup shell and anatomical design help limit excessive side-to-side motion.Enhanced Lateral Stability
Cross-strap and wrap system work with the shell to reinforce the ankle and help reduce unwanted inversion.Precision Fit Adjustment
BOA® Fit System enables micro-adjustable tightening for a secure, even fit that stays consistent.Customizable Support and Compression
Integrated strapping and BOA® closure help distribute pressure evenly around the ankle for a more consistent level of support.Quick On, Fast Adjustment
Step-in design with BOA® dial allows for easy application and one-handed adjustments without removing the brace.
Is this brace right for me?
The Aircast AirSport+® ankle brace is designed to help control ankle movement during activity by combining a supportive stirrup shell with a dialed-in BOA® Fit System. The semi-rigid structure helps limit side-to-side motion and reduce ankle rollover, making it a strong option for those recovering from mild-to-moderate sprains or managing ongoing instability. The BOA system allows for quick, micro-adjustable tightening to create a secure, even fit, while integrated straps and aircells add reinforcement and comfort. The result is consistent moderate support for sports and everyday movement.
Ideal for:
- Court sports with lateral movement like tennis, basketball
- Walking on uneven surfaces
- Hiking on moderate terrain
- Extended standing or walking throughout the day
- Returning to sport after mild-to-moderate ankle sprains
Find the Right Fit:
- Use the size chart to match your shoe size to the correct brace size.
- If you land between sizes, choose the larger option.
| Size | US Men's Shoe Size | US Women's Shoe Size |
|---|---|---|
| XS | <3 | <5 |
| S | 3-5 | 5-6.5 |
| M | 5-8.5 | 6.5-10 |
| L | 8.5-12 | 10-13.5 |
| XL | >12 | >13.5 |
How To:
BOA® Lacing System
To Loosen BOA®
- Lift BOA Knob.
- Pull the lacing.
To Close and Tighten BOA®
- Push BOA Knob down and then turn BOA Knob clockwise.
- BOA Knob must be in the down locked position when wearing brace.
Brace Application Guide
- Unfasten straps and open brace.
- Slide foot into the back of brace. Pull the lateral shells upwards and align with the sides of the ankle.
- Close the straps according to numbering:
- Pull the top strap around the back of the calf and fix to the external side of the brace without tightening too much. This helps position the lateral shells correctly.
- Pull the bottom Achilles strap around the back of ankle and fix to the external side of the brace without tightening too much.
- Tighten the brace by turning the BOA Lacing System clockwise until the desired level of support. Note: If the ankle brace is too tight, open the BOA system, loosen the laces, push the tab down and re-tighten.
- Pull the front cross-strap tightly through the buckle and fix firmly onto front of brace.
- Put on a lacer shoe or sneaker.
- To adjust the level of support, tighten or loosen the BOA Lacing System or the straps.
Download product details.
Product Care
Hand wash in lukewarm water with a mild detergent.
- Air dry (do not place on radiators/heaters or other heat sources).
- Do not use bleach or chlorine.
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Recommended for:
- Medial/Lateral Ligament Protection
- Ankle Sprains
- Ankle Instability
