Hinged Knee Support Sleeve w Open Popliteal & Horseshoe XS APP Pumps Pads Acces Construction: flame resistant black neoprene (not 16 7136 Construction: flame resistant black neoprene (not made with natural rubber latex) * Includes: HIGH PROFILE Single Compartment Cushion two way stretch cover hand inflation pump repair kit and operation instructions * Height: 4 When you are out of the preset zones the training computer will give a visual and audible alarm * HRmax (user set) * Manual target zone : bpm % * This feature enables you to define the target zone as you want and is suitable for your training The Drytex hinged knee suppoprt is a Neoprene alternative constructed of a unique nylon core and polyester Lycrar fabric that allows for improved airflow * Provides compression and support yet allows for breathability ideal in warm weather climates * Designed for mild to moderate medial lateral stability * Measurements taken 6 above mid patella knee joint line and 6 below mid patella circumference * Extra Small fits: Thigh: 13 15 5 (33 39 cm)