The Big Agnes Roxy Ann has ticked some boxes but the 3-in-1 design is better on paper than in the hills – especially when it’s windy.

I like the idea of the three-in-one system because it offers good versatility so you can take all, or part, of the bag with you depending on the trip and season. But, in action, the full Big Agnes Roxy Ann set-up is a bit of a hassle.

Fiona Russell’s verdict

Big Agnes have ticked some eco boxes but there are practical issues with this 3-in-1 system.
Pros
  • versatility
  • women’s shape
Cons
  • weight
  • usability
Quick specs
Price: £349.95
Weight: 1470g
Fill: 482g (total) 650 fill DownTek™, Bluesign® PFC-free water-repellency
Shell: Nylon Rip-Stop, PFC-free water-repellent finish; lining, GRS certified 100% post-consumer recycled polyester taffeta
Construction: box wall
Zip: 2-way full-length zip, half 2-way zip
Length: regular
Rating: -3C comfort
Sizes: regular, long
Women/Men’s version: yes
www.bigagnes.com

It’s fine when you have time before going to sleep to make sure the inner and outer fit together, but if you get out of the bag at night, to go to the loo for example, it can be frustrating trying to get back into the right section. To do this, you need to concentrate with a headtorch on. This is not ideal when you are half asleep. I think that because the inner has a front zip, while the outer bag has a side zip, this adds further confusion.

A useful feature is the sleeping pad attachments to ensure the outer bag stays put on an inflated mattress, However, because the outer bag stays still, I found myself getting into a bit of a knot inside the inner bag. The regular length is quite short and made to fit a woman of maximum 168cm (5ft6in). I would expect regular too be longer than this.

The zips are basic, although they are two-way, and the pulls are small. I have been confused by the comfort rating of the bags. Combined, they are meant to offer between -9C and -18C but then I read that the comfort temperature is only -3C. I would not like to be sleeping in this bag in any temperature lower than -3C and, actually, I would recommend you reserve the bag for temperatures around 0C unless you are a warm sleeper.

I also wouldn’t recommend the Roxy Ann if it’s particularly windy because the fabric doesn’t appear to be very windproof. The inner and outer fabrics feel lovely and silky but the down is a bit clumpy inside the box walls.

There is a baffle behind the zip that feels lacklustre compared to other bags, and there is no shoulder baffle. There is a carry bag, but no compression straps, plus a stuff bag.

Big Agnes have ticked some environmental boxes including PFC-free technology and accreditations such as bluesign and GSR.

Testing conditions

Fiona is 173cm tall and UK10. She is a cold sleeper. She is also a side sleeper and likes to be able to move her legs around and curl up inside a sleeping bag. These bags were tested in winter temperates below 0C.

This review was first published in the January 2025 issue of The Great Outdoors.