OTHER COLOURS DESCRIPTION The definition of deconstructing and reconstructing is seen in this new EXOSTRIKE design. This combat looking boot still features the award winning aspects of the classic model but now with a sleek modern upper. The zipper in the front makes it easy to wear in daily life adventures. LEATHER FSD-X Dyneema is a fusion of Dyneema®, the world's strongest fiber™ and Bovine leather. This creates the ultimate hybrid in leather that is ultra light, strong and thin. The Celeste XA, the signature W-21 nappa leather for sneakers, is added to give a soft and soapy touch.