What size top quilt for doubling up in winter?

Get a regular length, wide quilt. That way you have a little extra coverage, which can be important on winter trips.

I’m a lot larger than you and have several years experience with how EE’s dimensions work for me.

The Helium’s shoulder girth seems to be 63″ and hip is 58″ so you could probably get by with a regular width providing you are using EE’s pad attachment straps.  I do use the pad straps for winter use.   But I see little downside in using the wide … you can eliminate excess air space above the hip by adjusting the straps.

It would help if marmot provided foot girth info.  The foot difference between EE’s regular and wide is not a lot (40″ vs 42″)…. but if the bag is getting compressed then every bit of extra is a benefit.   Are you able to get to a retailer that would let you measure the helium?

I’m wondering if you need a regular length.  At 72″ I’m at the top end of of EE’s sizing guide for a regular length and find it to be more than enough in normal use.  You are at the top end of their guide for a short  so it might work unless you want to have the quilt reach over your breathing hole.

Whatever you choose, please report back on how it worked out.

Thanks for the suggestions.  Yeah, I use a short length quilt normally.  Not sure if I need the extra length with it layering over a sleeping bag. I may give EE a call and see what they think.

My limited experience with overquilts is that getting bigger isn’t a great weight penalty and going larger allows full loft of the down underneath

My own synthetic quilt [ Nunatak & a custom design] is sized such that it can be pulled up well over the head leaving a tiny breathing hole if needs be

+1 on a regular length, wide.

Always go with the wide for versatility.

If you’re on the edge of regular vs. long, go with the long, the extra ounce or two is worth the collar coverage with a synthetic quilt, since you’re breathing into that area and it’s prone to a bit of moisture buildup.

I’ve been using the FF tanager + EE apex (50*F) and it’s been a great system. I replaced the EE straps with my own cordage setup, though, similar to what’s included with the REI Magma quilt, which may include one of the better pad attachment systems out there (my review of that here).

Also a quilt doubler here. I use a 40 deg Convert as my over bag. I Like the full zip despite the extra weight(1-2oz) in winter to fully encapsulate, better heat retention.

At 6’2” – 180lbs I use the LONG / WIDE dimension. There is enough length that, if need be, I can pull the entire quilt up over my head and cinch up with a small breathing hole. My feet bottom out in that situation and if I were to order again I’d get the X-Long.  Nice to have that option some nights, especially around 0 degrees

I would say get the LoNG/wide too at 5’6” unless you think the helium’s hood will suffice for extra head warmth… At sub 10 degrees I can never have enough warm head coverings! I wear a hat, 2-3 hoods from sleeping apparel, and MLD balaclava. Also a little extra length is nice to stash wet shoes/boots inside of a plastic bag at the foot of quilt to keep from freezing solid overnight.

my deep winter INNER BAG is a 20 deg Enigma REGULAR / REGULAR.  I can’t pull that length over my head at all, not that I need to, just for dimensions reference.

good luck and let us know what you go with after chatting with EE.  One of these days I’ll have a friend snap a pic of me before getting into quilt, I’m like a walking EE advertisement!