the Replacement one are Woven stainless steel mesh with adjustable closure by magnetic as original
the Slim and Bold ones are Woven stainless steel mesh with adjustable closure by Metal clasp,please be clear when you make order
All of them made of stainless steel mesh, which is refine durable and high quality
there are two size from 38mm and 42mm, and wild choise from out-looking, you can easily choose the right one you like
All of them are third Part Products, non-OEM, please don't make payment if you mind this.