Standard size US bags are all just a bit tight for me. I've tried the intermediate, M-49 Mountain, and mike's knock-off modular system.
Rumor has is that there's a large/long size ECWS Modular system. I saw someone say "I got the bigger version and there was plenty of shoulder room." I can't find it on the intertubez. Does anyone know what this is called? Keywords "large" and "long" haven't turned up anything for me. Boo.
EDIT: from www.olive-drab.com
Except for the compression stuff sack, the components are also produced in extra-long, 14 inches longer than the above standard size bags. The extra-long components were ordered individually with their own NSN's:
* Sleeping Bag, Patrol, X-long - NSN 8465-01-452-1688
* Sleeping Bag, Intermediate, X-long - NSN 8465-01-452-1690
* Bivy Cover, X-long - NSN 8465-01-452-1695
Well, 14 extra inches of length doesn't fit the bill...maybe I'm out of luck.
From the uscav store website, I found this review that states the larger size is 97"x37" which would be 5" extra length as opposed to 14" extra length. That seems more sensible. A little extra length would be nice, but 14" would be overkill for me.
[5.0 out of 5 stars]
i purchased one of the sleep systems when i first got it i tryed it out it was a little tight one of my buddys bought it off me and i ordered another 97x37 all i have to say is wow i'm a big boy and i can stretch out no problem we resently went out to the the rock front every thing going good. well the weather changed started getting cold and a lil wet got in my bag as soon as i got in it started dumping for at least five or six hours well when i woke up i had a inch of ice on my bag but the bag kept me dry and warm i give it a five but if you do long hikes it is a little heavy 15 lbs. but well worth the investment big jon