I sort of like this type (urethane) inner bladders because they look like you could basically repair them with a simple bike tire patch. My LCD30 also has a similar looking inner bladder and it made my DIR-F instructor gringe as he had just finished explaining that the Halcyon explorers use 400 denier nylon bladders so that they would be sufficiently puncture resistant for WKPP needs (these bladders look somewhat similar to the common outer bladders for those who haven't seen them). Admittedly the Halcyon inner bladders do look more rugged, but they also look harder to repair (though my DIR-F instructor contested this suggestion) and neither seems particularly likely to pop underwater anyway. Shifting gas inside the wing also made a distinct noise with my ex-explorer 40, which I don't recall hearing with the Torus (urethane inner bladder), though I could be mistaken as I was wearing a thicker hood when I used the latter.
Anyway I brought it up because I was hoping to hear Patrick's and Tobin's side on the urethane vs. 400 denier inner bladder issue, as well as other people's thoughts and experiences. Advantages? Disadvantages? Opinions?
