2 layer YKK zippers with Heart flap for an anti-leak design and style. Our zipper program provides double protection and cuts down worry over the zipper process to provide many years of usage. Norman_E reported: I do not Imagine they will Slice fouling within the propellers extremely much, if whatsoever https://andrectiqd.myparisblog.com/36422345/the-basic-principles-of-oxygen-chamber-therapy-price