Fieldsheer Mobile Warming Pro Merino Wool Heated Socks

Review by Paul Gallaher

This winter has been unseasonably warm here in the mountains of Colorado. Despite this, there have been enough icy days for me to test out these heated socks from Fieldsheer.

Details

First, these socks are from the Mobile Warming line of heated clothing from Fieldsheer. These socks are made of a nice, soft merino wool blend (with some nylon, polyester and lycra). They are an “over the calf” design. The batteries are cleverly designed with a conformal shape to comfortably sit in a pocket on the upper part of each sock. The Lithium-Ion batteries are 3600 mAh each and deliver power to the heating elements through a cord that is cleverly concealed in the battery pocket on the top of each sock. There are four power settings on each battery that deliver 100%, 75%, 50% or 25% power to each sock. Depending upon the wearer’s preference the batteries are advertised to last between 4 hours and 13 hours per charge. Also, these socks are Bluetooth controllable via a mobile app, compatible with both Apple and Android phones.

The socks are designed and manufactured with dual heat zones, both over and under the foot. This is a nice feature for those feet that are outside for hours in windy conditions. The wires have a “flat” design to them to minimize the sensation of wires, particularly under foot. Importantly, the socks are made and marked for “L” and “R” feet so the battery comfortably fits on the outside of each calf where it is not in the way.

Lastly, to my delight, these socks are advertised as machine washable.

Wear Testing

I live in the high mountains of Colorado which means that cold weather can be present during many months of the year. I work outdoors as both a Nordic ski instructor and a Nordic ski groomer, where I can spend hours exposed to the wind and cold. I was excited to have the chance to review these. Recently, I wore the socks on an 8 degree F morning. I set them on the 50% setting and noticed that while I could not feel them heating, per se, my feet never got cold (seems like they’re working as advertised). When I did set them on “high” at 100% power, I definitely noticed my feet got toasty. This gives me the peace of mind knowing that when I am working outdoors, riding a snowmobile for hours at a time, that my feet will be warm for the entirety of my shift. On the days I did test these, I never had the batteries die on me while I was using them. They charge well with the USB cords that are included.

In cold weather, for skiing, riding a snowmobile or otherwise being outside, I appreciate the fit and feel of the material in these socks. For me personally, the elasticity of the socks is a nice feature for over-the-calf socks as they stay in place! Some wool socks, while warm, are not a blend and therefore do not have good elasticity. I like what Fieldsheer has done with their material blend in these socks. Also, I’ve discovered they survive the washing machine just fine.

Using the phone app is a nice benefit, especially on very cold days where your legs may be covered with ski, snowmobile or work pants and it isn’t practical to access the battery to change the temperature settings. Of note, the socks must be manually turned on at the battery and not via the app, which does work well changing the temperature settings.

The socks come with batteries and a USB charging cord. On a side note, remember, these batteries may not be placed in checked luggage on flights as they’re lithium ion batteries. You’ll have to put ‘em in your carry-on.

In conclusion, for those cold days when non-heated socks won’t cut it, I’m grateful to have these in my dresser! I can easily recommend these socks.

These socks come in three sizes, Medium, Large and Extra Large.

Paul Gallaher

Paul grew up in Minnesota where he learned to love the outdoors, riding his bike, fishing and canoeing in the summers and skiing in the winters on Minnesota’s 300 foot-tall “mountains”.

After finishing college, he was commissioned as an officer in the USAF eventually becoming a special operations and reconnaissance instructor navigator flying and serving around the world for twenty-two years.

Living and traveling around the world has given Paul opportunities to explore outdoor passions. He is an advanced scuba diver, a pilot, a sailor and has skied in the United States, Canada, France, Italy, Austria and Switzerland.