New DonJoy Adult Large Trizone Elbow Compression Sleeve for Soreness Black Gray Purple which provides greater handle stiffness Bat Specs 2 5 which provides greater handle stiffness than alloy alone ever could balanced swing possible with an extended sweet spot Three zones of compression strategically placed around the ankle to deliver peak performance Silicone banding injected directly onto the sleeve adds medial lateral support to sprained ligaments strained tendons and weak ankles All natural carbonized bamboo is thermal regulating and anti bacterial helping eliminate odors Designed with reflective materials for enhanced visibility in low light conditions Universal fit allows the DonJoy Performance TRIZONE elbow compression sleeve to be worn on either the left or right arm