The Arcteryx Phase AR Bottom are mid weight, full length base layers. Perfect for high pulse activities in cooler temperatures. The Phasic fabric keeps you warm when descending and dry when ascending. It has a soft touch and is stretchy to compliment its excellent fast wicking performance. The Phase AR Bottom utilizes hybrid mapping to reduce bulk, which in turn, leads to improved thermal regulation. They also have a Durable Anti Odour finish which means they will prevent odours for longer.
Phasic base layer fabric is compiled from two different yarns. The first is a non absorbent hydrophobic yarn, which will shed water molecules pushing them onto the PHi yarn. Silver ions are encapsulated into the hydrophobic fibres of the yarn, which provide anti-microbial properties to help eliminate odour.
The second yarn is PHi, a multi dimensional yarn, which wicks moisture laterally along the length of the yarn, effectively dispersing moisture evenly across the garment. Temperature regulation is improved as this dispersal, eliminates cold spots. As you slow down or stop, the fabric will dry quickly, as a result of the larger surface area the moisture is covering. This quick evaporation helps to retain body heat.
Arcteryx Phase AR Bottom Features
- Phasic AR and SL fabrics
- Hybrid mapping
- Flatlock construction
- Durable Anti Odour finish
- Next to skin
Customer Reviews of Arcteryx Phase AR Bottom
I bought a pair of these as part of converting the majority of my clothes to Arc'teryx. If it helps, I have a 32 inch waist and initially bought medium. I thought it wasn't tight enough for me and returned it for small which was perfect despite the minute size difference (by overlaying them).
I've worn them in temperatures down to 0C with normal trousers/jeans and felt they noticeably held the cold/draft at bay which was perfect!
I don't think I review enough of my good products but the Arc'teryx Phase bottoms are superb - I bought them as a result of discovering my skiing location was -27C when I was visiting I thought I'd best find a base layer of note. My go to baselayer is merino and whilst I searched high and low, I decided on Phase and at the price they were a steal. I would usually ski wearing a pair of technical walking trousers beneath my ski pants but occasionally wind chill would bite. Using the Phase bottoms I was warm and when working hard they breathe very well. They were a great purchase and I'd recommend them to anyone...
Last year I went for the first time on a 10 day trek into the freezing cold Lapland in Finland.During these 10 days, my only base layer for the top was the Arc'teryx Phase AR Zip-Neck Long Sleeve which performed really well, when the Nordcamp bottom base layer I had kept me sweaty during the walk and cold during the pauses, rubbing and scratching the skin behind my knees.So this year I decided to invest into a better bottom for the cold temperatures. I only chose the Phase AR Bottom because of the good experience I had with the top from the same range of Arc'teryx products.
The Phase AR Bottom definitely delivers an improved temperature regulation than what I have experienced with any other base layer pants.It keeps you warm (the fabric actually retains the heat) while allowing good ventilation behind each knee.I've worn it for 6 straight days in cold and wet conditions, and I've been surprised of how quick it dries (from the sweat under my waterproof pant) at each pause.Compared to my previous base layer pants the crotch comfort is absolutely perfect and it's not itchy in the seams around the waist.I usually wear Medium, but as most of the Arc'teryx products, the Phase AR Bottom Size S fits me perfectly, so I would say it is slightly larger than its size.
I can not find anything wrong with this product. I would recommend it for any kind of cold weather, under softshell or hardshell pants.