I'm a long time reader but first time poster. Every ski season I have the same problem: my hydration bladder's hose or mouthpiece freezes. I've been through it all, leaks, frozen mouthpieces, and frozen hoses. I even use the neoprene insulation offered by Camelbak and use the blow-back technique.
I came across TNF Snowday pack that has a built in heater but it looks like they stopped making it.
I'm wondering if it didn't work or people just didn't find it useful. Please share your experiences, I can't be the only one!
Being an engineer I ordered some parts to built a heated hose. I wanted to get a feel for the community's interest so please answer the poll above if you have a chance. I might build some extra for people to test. =)