When comfort, plushness and space are a priority, the Amplitude Am2 from Sea to Summit is the sleeping bag that doesn’t feel like a sleeping bag.
This rectangular design has an ultra-wide circumference that allows plenty of wiggle room. With a comfort rating of 2°C and a lower limit of -4°, this bag is an all-rounder for general conditions. Adjust according to the weather - zip it up and pull in the drawcords on chilly nights, and make use of multiple zips for extending limbs or creating an open quilt when it’s warmer.
Featuring a 30D nylon shell with a 20D nylon lining and R.D.S certified 750+ loft ultra-dry down fill, snuggle up in superior insulation. To prevent cold spots, vertical baffles over the chest and side block baffles keep the down on the top for ultimate warmth. Stash your phone or other valuables in the large internal security pocket, and connect this bag to a sleeping mat thanks to the adjustable webbing loop system.
Designed especially for car-based camping, sleeping in huts, or nights out in your van – the luxurious comfort of the Amplitude Am2 Sleeping Bag from Sea to Summit will lay it all on you.
Heya! This bag on the S2S website is -4deg. Could you please let me know why you've got this as 2deg? Thanks
G'day Kelly,
This bag does have a 'lower limit' of -4 degrees and a 'comfort rating' of 2 degrees. The difference between Comfort and Lower Limit is the temperature an Average Male vs an Average Female can comfortably sleep. There is a great blog to explain this better than I can here!
Snowys do advertise the Sea to Summit range from the comfort rating rather than the lower limit.
I'm (female) generally a cold sleeper in tents, but warm when I'm at home. I've used down duvets before and they tend to be too hot at home. Would this sleeping bag be good for a cold tent sleeper in Spring/Autumn? I like how much width is in this bag compared to the more tapered mummy style, so this is probably the best in terms of versatility (and using in warmer months), but want to make sure it will be warm enough on cold nights. I haven't purchased a sleeping mat yet, but looking at the S2S womens Ether Light XT Insulated. If this sleeping bag would be better with a warmer mat, could do either S2S womens Comfort Light Insulated R3.9, or Nemo Insulated pad R4.2. Thanks heaps!
G'day Kelly,
The general rule of thumb when choosing a sleeping bag is to go with a comfort temp rating of 5 degrees less than the lowest ambient temperature you'd expect to be in, or 10 degrees less if you are a cold sleeper. This is to account for all the variables that come into play when you're talking about sleeping in the outdoors, which can include hydration levels, activity levels, when you last ate, etc.
I'm a hot sleeper at home, basically sleep in the nud, and would have the fan on year round if I could, but that's because I'm on a very thick latex mattress and sleep with my partner whose own body heat adds warmth to the space.
If I'm out hiking or camping solo, I'm an exceptionally cold sleeper. I need a -10ºc bag and the Etherlight Extreme R6.3 to be comfortable on cool nights around the 0-3ºc mark.
Comfort temps are a guide, and cannot account for every single person's individual biochemistry. The best place to start when building a sleep system is with your mat. If you're a cold sleeper you'll probably need to look at a mat with an R-Value of 4 or more. When the EN testing is done for sleeping bag temps, they use an R-Value 4 mat. So if you are on a sleeping mat with a lower value, the sleeping bag comfort temps aren't as relevant.
I'd really encourage you to listen to our podcast on Sleep Systems and ratings with Sea to Summit. There's loads and loads of info there that will help you narrow down the best mat, bag, etc for you.
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