While we don't verify specific claims because reviewers' opinions are their own, we may label reviews as "Verified" when we can confirm a business interaction took place. Read more

To protect platform integrity, every review on our platform—verified or not—is screened by our 24/7 automated software. This technology is designed to identify and remove content that breaches our guidelines, including reviews that are not based on a genuine experience. We recognise we may not catch everything, and you can flag anything you think we may have missed. Read more

See what reviewers are saying

Rated 5 out of 5 stars

These socks are absolutely brilliant! A game changer for my daughter who suffers with Raynards. They were also really helpful when ordering

Rated 1 out of 5 stars

In January 2025, I purchased the Thermic heated mitts. They have never worked properly. The right one is now dead. I have both called and e-mailed customer service to inquire about repair. No response... See more

Company replied

Rated 4 out of 5 stars

Good product, makes insoles much easier to use. Difficult to order from UK as there wasn't an option in the drop down menu, turns out you need to go to a different website, it would be useful to hi... See more

Rated 5 out of 5 stars

I was searching for some replacement ski boot heated insole batteries for my wife's ski boots. Despite searching high and low for Sidas batteries, it was impossible to find a direct replacement. I con... See more

Company details

  1. Outdoor Clothing and Equipment Shop

Written by the company

Therm-ic are the producers of innovative & technical clothing, accessories and dryers to support you in your adventures. ------- Therm-ic is built upon on many years of experience, which started with the invention of heating for ski boots. Building on the developments and patents of the last 20 years, the range of products now includes a whole series of high quality, approved solutions for your winter sports activities.


Contact info

3.7

Average

TrustScore 3.5 out of 5

101 reviews

5-star
4-star
3-star
2-star
1-star

Replied to 33% of negative reviews

Typically replies within 2 weeks

How this company uses Trustpilot

See how their reviews and ratings are sourced, scored, and moderated.

Companies on Trustpilot aren't allowed to offer incentives or pay to hide reviews. Reviews are the opinions of individual users and not of Trustpilot. Read more

Rated 5 out of 5 stars

Great service

Great service. Product is very good with a very competitive price. Customer care has been grate managing the delivery.

January 27, 2026
Rated 5 out of 5 stars

Going the Extra Mile and a Shining Halo

I was searching for some replacement ski boot heated insole batteries for my wife's ski boots. Despite searching high and low for Sidas batteries, it was impossible to find a direct replacement. I contacted Sidas in the hope of finding a source. I was quickly informed by Liam that they no longer had that model in their inventory and did not hold any stock. I thought that was the end and an expensive replacement set of insoles was necessary. Liam was an absolute gentleman and had a hunt around the facility and found some similar batteries lurking in dark and dusty corners. Without hesitation he sent them to me free of charge, despite me wishing to forward suitable recompense. You cannot and do not find service like that often in your life and I cannot thank Liam enough, hence the outstanding and superb review. Thank you Sidas and Liam deserves a pay rise.

January 24, 2026
Unprompted review
Rated 1 out of 5 stars

Poor performance heated mitts & customer service

In January 2025, I purchased the Thermic heated mitts. They have never worked properly. The right one is now dead. I have both called and e-mailed customer service to inquire about repair. No response, even after 10 days. Terrible product, very expensive, does not work and customer service is non-existence.

January 5, 2026
Unprompted review
Therm-ic UK logo

Reply from Therm-ic UK

We’re very sorry to hear that your right mitten isn't working and that you haven't been able to reach us about a repair — that’s certainly not the experience we want for our customers.

I’ve checked our inbox but haven’t been able to locate your original message. Please could you email us directly using service@sidas.co.uk with your details, and we’ll be more than happy to look into this for you.

We appreciate you bringing this to our attention and look forward to resolving the issue for you.

Rated 1 out of 5 stars

Heated mittens don’t work…

Heated mittens ordered and delivered within 48 hrs which I had paid for which was great. Didn’t have time to charge when received as flying to ski . Plugged in when arrived in France. After 10 hrs charge still on red and gloves wouldn’t turn on. Emailed company who claimed I needed to connect the batteries to gloves but had already done that. Another 10 hrs of charge and still no charge going into batteries . Another complaint sent and again a short response telling me to check connections . Have plugged in at home in the UK now and still gloves won’t charge. Now awaiting another response from company and await next stages . Very frustrating to have spent this money for a product that doesn’t work

January 5, 2026
Rated 1 out of 5 stars

Therm-ic gloves: Save your money, these are not good!

The gloves felt great in a warm room but they offer very little when the temperatures fall. I was so unhappy that I returned the gloves only to be told that they were functioning normally. If that's the case, they are not fit for purpose.
Even if they did provide heat, the batteries cannot cope with a whole day, even on the lowest setting. The life cycle reduces in colder temperatures, so you can see the problems.
My advice, invest in good inner gloves and forget these...they have been an expensive mistake.

January 4, 2026
Unprompted review
Rated 1 out of 5 stars

Lacking quality and customer support.

I was gifted a pair of heated socks last Christmas. They seemed great that season. The next season, one of the socks didn’t heat up and I emailed customer support. After some back and forth they won’t replace the sock unless I provide the original receipt from purchase, which we couldn’t track down. Additionally, if it were past 2 years they wouldn’t even do anything which is quite terrible for a product that gets used 3-4 months of the year and is extremely expensive.

Very disappointed in both the quality of the product and the customer support. I’ve used hot tronix for years and never had them deny a claim when their product stopped working.

December 29, 2025
Unprompted review
Rated 1 out of 5 stars

very poor durability

I've bought five batteries and three pairs of socks in two years. Three of the batteries are no longer rechargeable after two years. Two of the three pairs of socks no longer conduct electricity. An extremely overpriced product that I personally wouldn't buy again.

December 16, 2025
Unprompted review
Rated 5 out of 5 stars

I had a couple of questions for the…

I had a couple of questions for the help centre, in advance of making any purchases, who responded promptly and positively.
From making my online purchases through to receiving the goods, it all went seamlessly.

March 25, 2025
Rated 4 out of 5 stars

The staff were polite and tried to help…

The staff were polite and tried to help me with regards to finding a sock that would be a better size sock for me because the sock I bought was too big for my feet .
Unfortunately on this occasion they did not have the right size . However after discussing I was able to obtain the right size sock with another Therm-ic supplier

March 5, 2025

The Trustpilot Experience

Anyone can write a Trustpilot review. People who write reviews have ownership to edit or delete them at any time, and they’ll be displayed as long as an account is active.

Companies can ask for reviews via automatic invitations. Labeled Verified, they’re about genuine experiences.

Learn more about other kinds of reviews.

We use dedicated people and clever technology to safeguard our platform. Find out how we combat fake reviews.

Learn about Trustpilot’s review process.

Here are 8 tips for writing great reviews.

Verification can help ensure real people are writing the reviews you read on Trustpilot.

Offering incentives for reviews or asking for them selectively can bias the TrustScore, which goes against our guidelines.

Take a closer look