How long does the battery last?

Therm-ic rates the S-Pack 700 at up to 8 to 14 hours. Expect the short end at the highest heat level and the long end at the lowest.

Can I use the batteries with other heated socks?

Yes. The S-Pack batteries snap onto compatible Therm-ic heated socks, so they can serve more than one pair.

How do I charge the batteries?

Each pack recharges with the included USB charger. Two batteries are in the box, so one can charge while the other heats.

Are these socks unisex?

Yes, the Heat Fusion Uni is a unisex sock. Pick the size that matches your foot length and check it against your boot.

Will the battery fit inside my ski boot?

The pack snaps onto the sock at the calf. In a very snug boot or liner some skiers feel it; a roomier cuff helps.

What do buyers say about the Therm-ic Powersocks Set Heat Fusion Uni and S-Pack 700?

Rated 3.7 out of 5 from 23 ratings.

Where can I buy the Therm-ic Powersocks Set Heat Fusion Uni and S-Pack 700?

6 stores we checked sell it, including My Cooling Store, GritrOutdoors, The Warming Store, PADI-Dja, RunUnited.

Therm-ic Powersocks Set Heat Fusion Uni and S-Pack 700

Q: Where is the Therm-ic Powersocks Set Heat Fusion Uni and S-Pack 700 cheapest?

At PADI-Dja, for $122.48, 51% under what the other stores charge, as of our latest check.

Best price now

$122.48at PADI-DjaChecked Nov 4

51% under what the other stores charge

Compared across 6 stores. Prices are checked against each store and labelled with when.

Visit PADI-Dja

What reviewers say

3.7 / 523 ratings

Ratings are middling at 3.7 out of 5. Owners like the warmth around the toes and the adjustable levels, but some find the battery noticeable in the boot and the top heat settings drain it faster than expected.

What people mention

WarmthPraisedOwners say the heat reaches the toes evenly and keeps feet comfortable on cold days.
Battery lifeMixedThe 8 to 14 hour rating holds at low heat, but high settings drain the pack much sooner.
Battery bulkCriticisedSome skiers notice the snap-on pack pressing inside a tight boot.
Heat levelsPraisedReviewers like being able to step the heat up or down through the day.
FitMixedA few owners find the sock tight or loose around the calf depending on their boot.

About the Therm-ic Powersocks Set Heat Fusion Uni and S-Pack 700

The Therm-ic Powersocks Heat Fusion Uni are unisex heated ski socks sold as a set with two S-Pack 700 rechargeable batteries. Heat Fusion technology warms the area all around the toes. The batteries attach to the socks quickly and easily with snaps.

The socks are technical, soft and breathable, with a micro-channel construction that wicks away moisture. Moisture-Vent Technology guides moisture away from the arch of the foot. Macro-channels around the foot carry it away from the ski boot, so the foot can breathe. The socks give comfort in the sensitive areas of the shin, calf and instep, and have heel and toe reinforcements.

The S-Pack battery runs for up to 8 or 14 hours. It has three intensity levels, so the heat can be adjusted. It recharges with the included USB charger.

Type

Unisex heated ski socks with batteries

Material

49% acrylic, 27% polyamide, 10% merino wool, 12% polypropylene, 2% elastane

Fit

Tight fit

Battery life

Up to 8/14 hours

Heat levels

3 intensity levels

Charging

USB charger