hey guys take a pass on these bags . they might look warm but the bags are darn cold to sleep in, in all but a summers night. i used mine while i was in the army instead of my issue sack. i thought the idea was sound you could have your legs out and your arms out to hold a weapon while pulling security etc.. if you are plannning to use this system also use poly pro. and a poncho liner i think that would help alot to improve the sack .. but i again would pass on this .... vince g.. <img src="images/graemlins/confused.gif" alt="" /> [color:"green"] [/color]