The DreamWear Headgear/Head-strap is a great replacement piece to have when your original starts to lose it's bond. It is intended to be used strictly with the DreamWear Nasal Mask. This is only the single headgear/head-strap and does not come with any other products to make it whole.
This Headgear/Head-Strap is only available in one size. The compatibility of this will only be limited to the DreamWear and cannot work with other mask on the CPAP market.