14 Layers Design: There are PU leather layer, middle layer making of filler, moisture proof plastic layer. The bottom layer has a matte lining, it is soft and breathable. 22mm Width Reduction: For adding the practicability of the strap, the width from the strap head to the clasp is gradually reduced by 2 mm, you adjust it by yourself. 3Fast Release: Adjustable watch strap saves your time and energy, can quickly and simply install and replace the strap, and is more convenient to use. 4Unique Appearance: Black replacement watch strap has good looking and embossed surface, you can personalize your watch with it and keep your look fresh and up to date. 5PU Leather Material: Black watch strap is made of PU leather material, very professional and can use for a long time. You can wear it with a unique texture.