New DonJoy Performance Trizone Calf Compression Sleeve for Compression Medium no size sticker on knob Perfect racquet for players seeking Fastpitcxh Perfect racquet for players seeking a mid plus frame that will have an easy feel with great blend of control Supra helix grip Three zones of compression strategically placed around the shin and calf deliver peak performance Silicone banding injected directly onto the sleeve wraps and supports the calf muscle during activity to significantly delay the onset of fatigue All natural carbonized bamboo is thermal regulating and anti bacterial helping eliminate odors Anti migration technology helps to eliminate slip Reflectivity for enhanced visibility in low light conditions