Lightweight yet warm and versatile, the Ascent Ac1 from Sea to Summit is an adaptable down bag which will keep you comfortable on all kinds of adventures.
This bag has a tapered rectangular shape which is roomier than a mummy bag but will still keep you warm. You can adjust this design depending on the conditions thanks to the free-flow triple zips. With a half zip on the right side you can fold it down to free up your arms, the full-length zip and separate foot zip allows you to use it as a quilt when it’s hot, and you can close it all up when it’s chilly. The Ascent Ac1 has a 2°C comfort rating and -4° lower limit so it’s suited to general 3 season use.
Filled with R.D.S certified 750+ loft down, this bag provides plenty of insulation and it has vertical baffles over the chest to prevent cold spots, a side block baffle to keep the 60/40 fill ratio and oversized draft tubes to trap body heat. To keep the weight down, the shell and lining are made from breathable yet lightweight nylon, while the large internal security pocket means you can keep your valuables close as you sleep.
Prepare yourself for a myriad of sleeping conditions, with the cleverly adaptable Ascent Ac1 Sleeping Bag from Sea to Summit.
Has this bag got box baffles or stitch through?
G'day David,
The Ascent Ac1 has stitched-through vertical baffles in the torso and horizontal baffles in the lower half.
Hi, is the 'packed size' the smallest possible? ie. Can it be compressed further in a Compression sack?
G'day Grant,
The packed size is the uncompressed size of the bag stuffed into the compressions sack.
It is possible to get this smaller, however, there isn't an advertised compressed size as you'll probably get slightly different sizes each time, and it also depends how strong you are!
If I added a Sea to Summit Reactor liner would this increase the warmth rating to make it equivalent to the AC2?
G'day Lindsay,
A Reactor Liner will help keep you a little warmer, however, you will need to account for your entire sleep system when considering the bag you go for. If you're likely to camp/hike in temps lower than 2'C then we'd recommend looking at the Ac2.
I am looking into buying a liner for this sleepingbag but I am a bit confused which one is recommended. Can you please give me some options for liners?
G'day Martine,
Essentially you can pop any single liner in the Ascent AC1, however if you're looking for a lightweight option then the silk liner will be a good option. The Silk Travel Liner - Tapered Mummy will most likely be the best option, or if you're after a something with a hood then the Hooded Mummy will also suit.
I live in Brisbane and am looking for a versatile sleeping bag for the cooler months here in the hinterland. I’m also looking to trek Tas and NZ, probably late autumn or early spring. Do you think this would be suitable? If not warm enough, would a liner help much? Thanks
G'day Mikael,
All things considered, I reckon your best bet if you can afford the extra $50 or so, would be to go with the Ascent Ac2. I've also had a chat with some of our more seasoned Snowys adventurers and they concur.
Essentially TAS and NZ can get super cold, and even in the height of summer you can get snow. The consensus would be a bag that is at least -2, as you should always start off with a comfort rating that covers as close as possible to the lowest temp you expect to be in. Whilst it's awesome to have a liner on hand, best practice is not to rely on them for the extra warmth that could be the difference between a good night's sleep and a very, very rough one (personal experience talking here!).
Also, being a natural fiber you'll be able to use it comfortably in much warmer temperatures, with the additional options of the zip configurations or opening it right out like a quilt.
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