2 layer YKK zippers with Heart flap for an anti-leak style and design. Our zipper process provides double protection and minimizes strain around the zipper system to supply a few years of use. Presents the very best quality and functions In this particular price vary and rivals numerous units at https://howmuchisahyperbaricoxyge17395.blogunok.com/35979012/the-2-minute-rule-for-oxygen-chambers-for-healing