The Knox Micro-Lock Air is a CE certified Level-2 back protector, it is said to be the softest and most comfortable back protector Knox has ever made. The Micro-Lock technology keeps the armour soft to the touch but when impacted it locks together to provide increased impact absorption. Features include a soft stretch cover on the outside, breathable Y-shaped air channels providing multi-directional air flow, quick-release soft shoulder straps which cross over for increased comfort and soft adjustable waist belt with integrated kidney protectors. Available in S and L.