Apple Watch strap for fastening 38-40mm, 42-44mm. Antares straps are stylish combination straps that combine modern technology and quality materials. The soft leather of the strap is stitched with nylon thread backed with practical food-grade silicone. The strap sits comfortably on the hand, the silicone is dense, smooth and pleasant to the touch. A classic stainless steel clasp secures the wrist strap securely.