Evolution 20 Down Sleeping Bag Hammock

Ok...night 2, couple things.....there are draw strings that close the sleeping bag around your shoulders, and the flaps kinda get shoved around your ears and neck....but, at 28 ° with wind at 22 mph gusts, 45% humidity. It felt like 17° at 330 am ....my arm got cold again and it just got too uncomfortable in that weather with just one pair of wool socks on , sweatpants, tshirt , light long sleeve hoodie and a skullcap. So if I was dressed like I was hiking in this weather I'd probably be ok . I move when I sleep, back and side sleeper. So when I move the head opening allows cold air to get in and you will get cold , wake up and try to adjust it.
My lower body stayed warm , my upper body got cold...but, I was wearing light clothing too...so figure in thermals and thicker hoodie, I might be ok....guess that will be my next test....but still , the inside walls were cold to the touch in that temperature......it did feel like 17° , so I was in lower temperature than the bag was rated....think I will change my 3 star rating to a 4....This is a good setup and it gets a 4 because the bag doesn't surround your head enough like a mummy bag would. You modify it to become a mummybag and this would be a 5 star product....but, I'd recommend adding more duck down and making it at least 800Fp ...make it a 0° rated bag...that would be awesome.
Please make a Evolution 0° mummybag style...with inside pockets . I do recommend this sleeping bag hammock though, because most people will not camping in below 40° weather anyways....which this bag is very damn warm and comfortable to be in at that temperature.......I'm abit more extreme camper , so I'm gonna be hard to impress when it comes to gear.

The Bearded Hamper

The pictures are the views of one place i hammock camp in the Appalachian mountains. I tested this product at home , so I could get inside and warm if needed.

6 ft 220lbs , it was 25° last night and wearing two pairs of wool socks, sweatpants, tshirt, pullover hoodie and a skullcap. I tossed and turned abit due to my upper body getting cold. It's an open ended sleeping bag so I couldn't close the gaps enough to keep the cold out. I really wish this was a mummybag style hammock. I also wish there were inside side pockets to store , phone , water bottle and snacks. Now I don't know if I got cold because of open ended bag or because the underquilt is too close to the hammock itself......
If yall were contemplating a mummybag style hammock, you should've went with it, because this is a great idea. 40° and above and this would be perfect for anyone....I'm gonna test it again tonight 25° again, but this time I'm gonna use a small down pillow and see how well the bag will wrap around it to help keep the cold off my shoulders.

I gave it 3 stars only because I did get cold due to the bag not zipping up all around my head like a mummybag does. BUT ,besides that , THIS IS A VERY WELL BUILT PRODUCT. !! anyone looking for a hammock setup , this is gonna be the best thing out right now....my advice to Grand Trunk. Make a 0° mummybag style hammock with inside pockets and make it a few inches longer . I will buy that product from you if you do!!!!! And so will every Hamper out there once they find out you make them. Garaunteed!!!
Also, make the underquilt a tiny bit bigger so it so I don't feel it press against the underside of the hammock....then, you will have the best damn hammock on the market.
I'm gonna test it again tonight with one less pair of wool socks and see how it goes.
Grandtrunk, if yall want me to design your next hammock for 0° , I'm all in.

See yall in the review tomorrow for an update.

This hammock is incredibly comfortable and quick to set up and take down, making it a great choice for backpacking trips. However, it is not comfort-rated to 20°F as advertised—I’d estimate it’s more suitable for temperatures around 45°F or higher. I’ve used it in conditions down to 40°F and found it uncomfortably cold in spots due to the down migrating in the horizontal baffles, because of this, some areas had absolutely zero down and led to icy cold spots. To stay warm in colder weather, I recommend pairing it with a secondary sleeping bag or quilt and an underquilt protector for added insulation and to protect your investment.

I gave this hammock four stars due to concerns about the stitching on the two primary seams where the insulation meets the hammock. These seams go clear across the hammock. The stitching doesn’t seem tight enough, and I can see light through these areas. The loose stitching seems to be a common concern amongst other reviews. This raises questions about durability, as it looks like the seams could fail under stress. That said, this could be part of the hammock’s engineering or design, but it does leave me slightly uneasy. While the warranty should cover any issues, my primary concern is safety.

Despite these concerns, the hammock’s comfort, ease of use, and value stand out. I liked it so much that I even bought a second one for friends to use on our backpacking trips. Overall, it’s a great product, but keep an eye on the stitching and take steps to stay warm in colder weather.

I purchased this hammock during recent sale. For the past (3) weeks I have slept in it for 18/21 days. The first week temps over night were only mid 30 deg and I only needed sweatpants and sweatshirt, warm and cozy over night. The second week and this week over night temps have been low 20 deg, I have added a light weight sleeping bag inside this hammock. What is great about this hammock is that I no longer need an under quilt or over quilt for winter camping. Actually since I sleep outside at min 5 nights a week (due to back problems hammock is only way I can sleep without pain during the day) this is the best winter set up I have found. I own over dozen hammock and Grand Trunk is the best due to quality and the fact it does not stretch like the other name brand hammock. I have a permit hammock stand at my house in the back yard. I have used hammocks for over 20 years ever since my son stared camping with Boy Scouts and our troop only uses hammocks.

I love the hammock, it’s light, packs down small. I sleep comfortably in all temps and it’s my one and done solution.
However I got hosed on import Fees and should have bought it from a Canadian retailer rather than Grand Trunk directly. Would have cost me 150$ less and had no surprises.

I bought two EVOLUTION 20 DOWN SLEEPING BAG HAMMOCKS. I am a long time hammock camper, but when I starting bringing my girl friend along, she wanted to be together in a tent for security. I convinced her to try a hammock...we were both warm and cozy and with two hammocks hung together with the ENO spreader bars she had the close proximity/security she was looking for. No cold spots. At 10,200 ft it got cold at night (~high 30s) and we were both toasty warm. We used two MOZZY LITE Hammock Bug nets and two ABRIGO RAIN FLY SHELTERS to create our little airborne home away from home. Set up was a breeze and carrying this gear was easier and lighter than bringing a tent, two sleeping bags, two sleeping pads etc...plus the comfort of a hammock is hands down a major win over a tent. All of Grand Trunk's stuff is awesome (I have 2 Mozzy Lites, Two Mozzy 360s, a skeeter beeter, two abrigos, and five double deluxe hammocks). Now my only wish (not a complaint, but rather a plea to Grand Trunk)....please, please combine the awesomeness of the EVOLUTION 20 DOWN SLEEPING BAG HAMMOCK with that of the SKEETER BEETER XT (and make it a double deluxe)!!!!! This will bring your guys into a position to take over the market...I would order 4-5 of them the first day they are available and sell all my other gear.

First time out in the evolution 20 degree down hammock. Temps got to 28 degrees Fahrenheit. I was freezing. I added another cotton filled quilt and still froze. I was wearing jeans, T-shirt, sweatshirt. Finally packed up at 3am and went home. Not giving up on it. Gonna try with a base layer plus clothing but really disappointed. Guessing this is more like a 40 degree system. Will update after 2nd outing.

Finally broke ours in New Years Eve 23/24. Wow! 40° and toasty! I am pleasantly surprised at the comfort. We set ours up in tandem using Spreader Bars, not sure I like this setup as she gets up to pee every 15 minutes and puts me almost on the ground. 😂
Overall, I'm very pleased with this hammock. I still have to try the synthetic version, but I'm sure it will be just as awesome.
This puts ne at two MOABs, two Down Evolutions, one Synthetic Evolution. I just need to find a better tarp system. The Abrigo doesn't give enough coverage for tandem hammocks.
Next GT purchase? The Mozzy 360 bugnet shelter x2.

If you are camping in a hammock in the winter, this thing is for you. It’s incredibly comfortable and warm. I used it for two nights in sub 30 degree weather. I stayed nice and toasty.

We're in love with this winter hammock! With Phoenix sensory issues being out in the cold for long periods is difficult for him but daddy loves it! Now with this hammock he can swing out in nature. Do what he loves like play on his tablet, read his books in all his favorite places.

This is not only a great concept, it is a great concept that actually works. So far I am loving the Evolution. Camping out in it right now at about 33 degrees for the 2nd night. I can’t believe I have not heard more about this, it is a fine setup that I just stumbled upon. Very happy with the prompt delivery of such a fine product, will be continuing to test for the next few weeks to see if this will earn a permanent place in my pack.

Great piece of kit. I have hunted using a hammock for years now and this is a game changer. Only complaint I have is it took to long to find one.

This thing has it all

This hammock sleeping bag is awesome - I've used it a couple of times now and absolutely love it. It is warm and comfortable, and I'd highly recommend it.

I’ve been doing a longevity test with this set up. I started about nine months ago. I’ve been sleeping in it constantly four -five nights a week. It’s been perfect in the winter. I didn’t need it under quilt. I’m moving into spring summer. Various lightweight clothing still doing fine very comfortable as eliminated in. Need for a sleeping bag.

Evolution 20 Down Sleeping Bag Hammock

Absolutely love it. Grand trunk is the way to go.

I've written a review on this product last year. Temperatures dropped to 18°F last night , with zero wind. I had a very thin 100% polyester base layer(top and bottom) with a 250 100% merino wool layer over it(top and bottom), merino socks, and a pair of light shorts, and a beanie....there were a few cold spots in the hammock but overall I was able to get warm enough to sleep....WHEN ARE YOU GONNA MAKE A 0 DEGREE VERSION??,!!! ( I need it for my appalachian trail thru hike in 2026)

I've been hammock camping since before it was a thing. I'm sure I own 7-10 hammocks, 3 underquilts, top quilts, pads, etc. I've probably spent 10-15 nights in this hammock so far and it's so easy, so cozy and exactly what it is advertised to be. I don't know about 20 degrees, but I've been down to freezing and reasonably comfortable. There's no having to move the quilt to cover your shoulder, no problem sealing the quilt, no tucking the top quilt then being totally still so you don't get cold. It's like hanging a sleeping bag from two trees and losing yourself in the puff of quilting. Love it.

I’d love to leave a review if I actually received the product. I place my order at the beginning of last month and still have not received my order. I’ve sent several emails to the email on file to contact. I have had no response. I even paid for quicker shipping. I need someone to please contact me about my order.

It’s a perfect hammock for summer camping. However, I took it out for some early fall camping, temps got down to the high 30s and I was cold the whole night. I was wearing pants, shirt, socks, and sweatshirt. If it’s a warm night, I always sleep soundly, it just needs to be a warmer hammock!

First, let me just say the concept is top notch. It’s an all in one everything bag. It’s the perfect choice for someone not wanting to fuss with two quilts. So for those reasons, I’m smitten. But like all new relationships, this one has its tell tell signs of things to come. At 9.5 feet total it lacks in room. The reinforced grosgrain along the zipper, why not use that concept on the baffling. Instead, the stitching is weak and stressed. If this bag makes it through Virginia, I’ll eat my words, but every day, I wait for it to rip along the seam. Until then, I snuggle in and stay warm through the night and dread leaving its comforts come morning.