Hyperflex ACCESS 3mm Split Toe Boot neoprene BionicFoam: An extremely durable and wear-resistant 4-way stretch neoprene that is virtually bomb-proof and that will stand the test of time Diamond Skin Sole: provides excellent traction and protection without losing feeling and control; Miniature diamond-shaped channels ExoShell Membrane: A vulcanized heel lock/arch membrane that improves support, comfort and fit GBS Seams: We double-glue and blind-stitch all seams using a single-needle which does not puncture a hole all the way through the neoprene Unmatched Price Point: Your wallet will thank you and you will be warm, comfortable and happy; A superior value among all other options