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.Â LEATHER FSD-X Dyneema is a fusion of DyneemaÂ®, the world's strongest fiberâ¢, 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.