The Fento MAX F280440 is the big brother of the FENTO ORIGINAL, the longer length offers extra protection and ergonomics. The Ergonomic Wedge ensures the correct distribution of pressure across the lower leg, which prevents knee and back complaints. It has an improved fit which takes on the shape of your own knee after a while, which offers even greater comfort, flexibility and ergonomics. The FENTO MAX is exceptionally wear-resistant and has a broad, flat surface for extra stability. In addition, this product has a replaceable inlay for when it needs to be replaced (the support offered by the inlay reduces after repeated use) so you need not buy a completely new knee protector. The product is waterproof except for the inlay; it consists of a combination of both breathable and waterproof materials.