View Full Version : Helium/Prolite for JMT in September?

02-20-2013, 12:46
I have a Marmot Helium and Thermarest Prolite pad. The pad is only 17 ounces with stuff sack and I can sleep well on it. I like the fact that it is only an inch off the ground so my arms aren't dropping off several inches. I also like the fact that the material isn't as fragile looking as the Neo Air and I'm not so worried about puncturing it... However, I'm somewhat worried that the 2.1 R Value for the pad will be inadequate on the JMT in September. I'm planning to finish at Whitney Portal on September 15 or 16. Any suggestions on sleeping setup?

02-20-2013, 13:26
You're fine with that. I hiked the JMT the same time last year and was never cold at night. Obviously your conditions may vary.