I use mine almost every dive trip. I trim the 1" of nipple coming off my condom cath down to a size that the barb doesn't twist over and cause a blow off.
Dive knifes....preventing wet drysuit underwear since 2007 (when I got my first pee valve).
Dive knifes....preventing wet drysuit underwear since 2007 (when I got my first pee valve).