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Alpine Ultra Half Bag
The Alpine ultra half bag has been excellent. I'm a great fan of the anorak/half bag combination and have used it for many years. Mick Roffe
*Please note: We make our stuff sacs big enough to allow fairly easy stuffing rather than reducing the bag to the tightest minimum.
Camp down to 3°C and bivvy down to -10°C or lower.*
The mate for the Alpine Ultra jacket. The jacket is a superb stand-alone, but twinning it with this half-bag widens its capabilities. Camp down to 3°C and bivvy down to -10°C or lower.*
Half-bags (Pied d'elephant to oldies) are coming back. They've been out of fashion for many years in the trend towards using lifts and huts to make quick comfortable ascents, when a bivouac was a mistake, not a plan.
But the logic behind half-bags is still valid. If you're wearing a warm jacket already, all you need to spend the night out is something to keep your legs warm and there's no lighter way to do that than to use a half-bag. Check out the weights of PHD's half-bags and see for yourself.
...A half-bag is the lightest answer.
We have given two separate TOTs (Typical Operating Temperatures) for this half-bag.
All these figures assume you are wearing normal clothing inside the half-bag. Any insulated kit like down trousers and down socks will improve the TOT.
One of the lightest of PHD's coated materials. This ripstop nylon provides complete wind block and good water resistance at minimal weight. Ultrashell gives an excellent upgrade to performance with very little weight penalty.
A mini-ripstop nylon with excellent tear strength, MX is the pick of the superfine 15 denier downproof materials. We have tested lighter fabrics, but most have had significant drawbacks, while our confidence in MX is based on several years of extensive use in both our ultralight and our high mountain gear.
A newcomer to our range. European goose of rare quality. A high value alternative at the top levels of performance. More on our down insulation.
"The Alpine ultra half bag has been excellent. I'm a great fan of the anorak/half bag combination and have used it for many years – warm enough most of the time in this country (UK). The system is ideal if you tend to fidget about in the night and find sleeping bag entry + zips + keeping tabs on the dog all a faff particularly when it’s wet and easy to get the inside of larger sleeping bags damp." Mick Roffe
"It's now my go-to sleeping bag for overnight adventures. The bag itself is extremely lightweight, almost to the point of feeling fragile, but has kept me warm 3000m up a mountain in the alps, and on numerous trips around the UK without sustaining any damage. I'd definitely recommend a decent half bag to anyone looking to cut down the weight and size of their sleeping kit. It'd be particularly useful for bikepackers, alpine mountaineers and trail runners!" Jake Baggaley.
Optimised layering: maximum versatility; minimum weight.
Choose from a huge range of size, fabric & zip options…or take it a step further with our Design Your Own service
Your clothing needs to fit you. Choose any PHD garment, dial in your sizing, and we’ll do the rest.