360° ThermaQuilt 3-in-1 Blanket, Sleeping Bag & Hammock Underquilt

$ 68.97 $ 99.95


Don’t let cool weather keep you inside when you can turn your hammock into a warm, cozy cocoon with our versatile hammock underquilt and overquilt. The Grand Trunk 360° ThermaQuilt completely wraps around any hammock and cinches at the ends to keep the warm air in and cold air out. Or lay it flat to use as a tech blanket or traditional sleeping bag. Our underquilt works with almost any camping, outdoor or backyard hammock. Zip into warmth and stretch out underneath the stars; you’ll be well-rested for the new day’s journey! The Thermaquilt is a summer rated sleeping bag for cool summer nights.


  • Versatile design can be used as hammock underquilt/overquilt, sleeping bag or blanket
  • Stay warm & dry in temperatures as low as 40 degrees
  • Cord tunnel with cinch lock to keep the breeze out
  • Water Resistant

Tech Specs

  • Temperature Rating: 50° F
  • Outer Material: 20 Ripstop Nylon with DWR coating
  • Insulation: Synthetic 140 GSM fill rated down to 40 degrees
  • Capacity: 500 lbs
  • Weight: 29 oz / 822 g
  • Unfolded Dimensions (blanket): 5’4” x 6’8”
  • Sleeping Bag Dimensions: 2'2" x 6'8"
  • Stuffed Dimensions: 7.5” x 15”

Customer Reviews

Based on 15 reviews
Lisa Briers (Wimberley, TX)
Love this item!

As a camper who lives in Texas, this is the perfect weight for most of our trips. I bought one for me earlier in the year, and love it so much, I just bought this one for my husband.

Courtney Rivers (Chapel Hill, NC)

360° ThermaQuilt 3-in-1 Blanket, Sleeping Bag & Hammock Underquilt

M.S. (Houghton, MI)
This is awesome

I had to come on and write a review. This was freaking awesome. I spend a week camping in the upper peninsula and used this all the time. Used it over my sleeping bag, used it in my hammock, in my car when I got driven in due to a bad lightning storm. Sometimes I just wrapped up in it to keep the chill out. 10/10 definitely recommend. I’m just sad I probably can’t take it to isle royale with me

Jim Stanley (Buffalo Junction, VA)
Cover up

I got the hammock quilt quickly and had a chance to use it this weekend. I didn't use my hammock for this trip, instead used a cot in a tarp tipi. With the weather a bit cool, the hammock quilt converted quickly and easily to a soft lightweight cover over my sleeping system. Just the right amount of added layer for a very comfortable night. And, when I was packing up, it went back easily into the stuff sack. It will be a great addition for cool fall evenings at the beach house too! Versatile and much less expensive than other products.

S.G. (Venice, FL)
Innovative Hammock Quilt

I really like this 3-in-1hammock quilt! What a great way to have 3 nice products to use with a hammock or as a sleeping bag/quilt. When I got mine, I was disappointed to see one of the tie attachments in the inner pocket of the quilt was missing, but I'm hopeful that the good customer service at GrandTrunk will send a replacement. In the meantime, it's easy to rig up a rope that will serve the same purpose. I tested out the quilt one night in the hammock, and it kept me very warm and cozy. I'm also pleased that it packs down to a very small size, so I can fit it in my hiking backpack or use it when I kayak camp. Thanks, GrandTrunk!