I wrote a short piece for the Paddle Manitoba newsletter about making a one way valve to make inflating Thermarest mats easier.
http://ripple.paddle.mb.ca/diy-fix-for-thermarest-inflation-blues/
May be of interest to some folk on here.
http://ripple.paddle.mb.ca/diy-fix-for-thermarest-inflation-blues/
May be of interest to some folk on here.