Oex fulcrum ev thermtrap synthetic hollow fibre will help you to keep worn in them long cold winter night when out enjoying your hobby, I have used this oex fulcrum ev in temporaries down to -7, Stealth camping in -7 using the Oex fulcrum ev ?????? https://youtu.be/dVpYZNWZBvc Urban stealth camping video\'s ???????????? https://www.youtube.com/playlist?list=PLtwUBGcwyQ2pHqzvYKYA_WBrKQaOjm0NX 26 wild camping video\'s ????????? https://www.youtube.com/playlist?list=PLtwUBGcwyQ2owEelcAj10ksInK7-R1TOu 50 oex equipment review video\'s ????????????? https://www.youtube.com/playlist?list=PLtwUBGcwyQ2rNUvIK8mnHOl90OGoH_9Ln