New Markwort Swing Buster Stayback Tee Right or Left Handed Adult:White (see pics) Ventilation ports along GMP 7100D RHT 12.75 In Blk Brn (see pics) Ventilation ports along the front shell and knee cap accelerate airflow to keep your legs cool Hinged knee cap promotes independent movement during strides Removable liner delivers a cushioned fit that minimizes moisture accumulation Anatomical design forms to the shape of your leg for maximum comfort Adjustable upper lock and calf strap offer dual support to ensure a perfect fit Shin: Ribbed polyethylene cap Knee: Polyethylene cap Thigh: Extended foam paneling Calf: Anatomical molded foam " Regular fit is wider at the body Solid metal construction with padded frame Promotes balance