Adult 16.5 inch length. Complete over the shoulder security. Fully adjustable shoulder cap. Malleable plastic insets in the throat, sternum, and shoulders to disperse effects and help the chest protector comply with the body. Low rebound memory foam to deaden blocked balls. Breathable mesh support, lightweight and comfortable design. Ventilation ports on back. 4 point adjustable harness for making a best fit. AEGIS Microbe Shield kills undesirable germs and smells.