... . 1. Neoprene material, suit for all size mask 2. Can print U/V protection, PU , ... customize 4. Its comfortable for head .especially when diving with mask. Welcome to ask , we will reply u ... Model NO. : TZ-005-B Product Name : Mask Strap / Mask Strap Cover Material : Neoprene Size : One size suit ... Strap 2. With mesh downside, without mesh Compatible with Mask ( MYJ-109, MYJ-2011, ...) Customize : Yes ...