Alpinestars Fluid Pro Knee Brace Set-S/L Customizable, versatile and secure fit with its size adapter system (size ranges S-M-L and XL-XXL). Fine-tuning of personalized fitment offered by knee width adjustment spacers (1mm, 2mm and 3mm, both sides), supplied as standard. Supplied with anatomically optimized ErgoFit spacer kits for improved directional articulation performance and position stability. Correct positioning of knee cup is secured accurately with top and bottom elastic straps, allowing multi-directional freedom of movement, avoiding pressure points on the patella. New, soft, dual strap system promotes secure fitment of brace in all riding positions and includes combined buckle and Velcro closures for rapid and easy mounting as well as comfort.