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Sidas boot warmers

post #1 of 16
Thread Starter 

In my old age of 36 I've noticed that I get cold feet more easily than I used to. And with the last two winters being absolutely relentless, it's been a chore keeping my toes warm. I have custom footbeds in my boots and use boot gloves, and go through the usual precautions - put on ski socks and the boots in the chalet, keep them warm and dry, etc. None of that could keep my toes warm in the -25C I was skiing in last week. So I started looking into battery powered boot warmers. Today I stopped by a local ski shop, which sell Sidas boot warmers. I'd never heard of Sidas before, most of the forumers here mention Hotronics or, less often, Thermic. Sidas seems to be a bit of a mystery. The store clerk said that Sidas bought out Thermic and now uses Thermic as their big box line while the Sidas warmers are the more professional line. He kind of rolled his eyes when I mentioned Hotronics and said that they're not as reliable. I took all that with a grain of salt of course, he obviously wants to promote what he sells. They sell for $299 in Canada.


So I'm putting it to the fine folks here, does anyone have experience with Sidas boot warmers? How do they compare with Hotronics? They're a French company that seems mostly known for their insoles and footbeds. No mention of their boot warmers at all on Epicski. I attached a picture of the box. For the record, I use Lange Banshee Pro boots.


post #2 of 16
I haven't used Hotronics, so I can't give you a comparison, but I had Sidas warmers installed in my Lange RS 120s a few weeks ago because the liners are thin and the fit is such that there's no room for chemical warmers over or under my toes. Sidas warmers are a bit more expensive than Hottronics, but they were recommended because the warming element is slightly bigger than Hottronics' element. So far I've had them set on low and have been completely comfortable, though there was a cold blustery day when I should have had them turned up to medium. The batteries charge in one hour, which means they'd charge over lunch if you drained them in 4-5 hours because you had them set on high.

I like them, although it feels a little wrong to have warm feet. Wind and water tend to get under my boot flaps (a notorious problem with Langes), so I wear Boot Gloves in bad weather; that makes my feet almost obscenely cozy.
post #3 of 16
I can't fanboy the Sidas as I've not used competing products but I've gotten excellent performance out of mine. Battery life has remained fairly constant over 150+ days. The only issue has been crimping of the cable that connects to the battery (twice) but a crisp $20 to my boot guy and he installs a new cable.
post #4 of 16

I've used Hotronics and they were great for the first season and after that they never really seemed to work as well.  The shop where I work sells Therm-ic and Sidas.  I put Therm-ic ic950 heaters in my wife's new boots because she has Raynaud's and she said her feet were warm and toasty on the low setting over two days of skiing at Copper Mountain.  The batteries for Therm-ic are much more compact than Hotronics and are less likely to get caught on something.  I'm not sure about SIdas owning Therm-ic, we order from two entirely different website.  Just buy the Therm-ic and you'll be a happy camper.  The key to using them successfully is to turn them on immediately, don't wait for your feet to start getting cold.  They will run on low for 12-18 hours and medium for 8-10, IIRC.  Low is 99F and medium is about 115F.

post #5 of 16
I am on about day 100 of Sidas warmers, very happy. My battery packs are much smaller than Hotronics and deliver the advertised 6 hours on low.

Sidas also owns the Comformable brand...and across their product line may have more products focused on foot warmth than anybody. Check out their website.
post #6 of 16
Thread Starter 

Thanks for the input guys. I'm curious about the length of time that the batteries last. Sidas advertises as much as 8 hours but I'm seeing lower numbers from you guys. It seems like both Therm-ic and Hotronic last longer while Sidas might have to be charged mid-day. Would that be fair?

post #7 of 16
The Thermic batteries, even on the medium setting, pretty much last for a full day of skiing. Hotronic batteries also last about that long the first season but seem to deteriorate after that. We've had several people replace their 2-3 year old Hotronics with Thermic. If you want the batteries to last longer, buy the Thermic ic1200 and you'll have up to 22 hours on the low setting.
post #8 of 16
Battery size and weight matter. I am using the smaller Sidas and get six hours. That's a typical full day and they are very unobtrusive and light. I have only charged once during lunch, and that was because I forgot to charge the night before.

If I was skiing bell to bell, a bigger pack with longer life would be needed, or a lunch recharge, but realistically my day is 5 hours of ski time plus lunch and I don't want the extra size and weight.
post #9 of 16
I just checked, and it turns out that I have the pro batteries, which are said to last 8 hours on low, 6 on medium, and 4 on high. I haven't seen the smaller ones, but these are compact enough to fit under my shells, which have straight cut legs because they're not proper alpine style ski pants. I find the clips easy to use, which makes it easy to take them off on warm days or for visits to the bootfitter.
post #10 of 16
A guess a pic would help smile.gif

post #11 of 16
Originally Posted by NayBreak View Post

A guess a pic would help smile.gif

How do you like your Sidas boot?

post #12 of 16
Originally Posted by mtcyclist View Post

How do you like your Sidas boot?

I have really liked them, with caveats that were my selection fault. That's the Sollie Impact GT shell, and I have had perfect I step/ankle fit with the injection liner, but tongue/cuff has been too loose/forward and probably too short for me. I am 6'2" and if I buckle it soft like it should be I could practically tele them, and that is not a soft flex boot.

I really like the looks of the latest version and it's time for new boots/liners. Seems Sidas has designed a booster strap mount over the tongue with a Sollie shell series that would be much more favorable to narrow calves and lower volume feet. The day one through day 120 comfort and fit of the injectable liner is hard to ignore...

post #13 of 16

We're a Sidas dealer and may have to consider have some of these next season.

post #14 of 16

After over five full years of working with the Sidas system I will say that the element and battery combination is superior. The ONE3 battery has a plastic clip on it that has a tendency to break off so it should not be taken on and off more then you need to but the power is superb. The NANO battery is small,one heat level and will only work for two hours. That being said it is outstanding for a beer league racer that uses a speed suit. The battery size and clip is much more manageable then the other brands in that regard. The PRO battery is their mac daddy as previously mentioned in this thread and can go up to 8 hours. It also has the solid metal clip and sports a solid lithium technology which gives the battery not only good transfer of energy for warmth but longevity as well. When integrating the heating element into custom insoles the Sidas is also superior in its ability to mold and adhere it exactly as needed to properly compliment individual contours built into the insole. It is paper thin therefore you will never feel any evidence of its presence other then warm feet. Sidas stands behind their warranty however, I have had very little need to utilize it.

post #15 of 16
Yea, I broke the securing clip on one of my ONE3 batteries, it doesn't lock on to the strap anymore but it still latches on fine so a minor thing.

Do the PRO batteries use the same cabling/plug (are they fully interchangeable?), and are they larger than the ONE3?

Thanks for ^^^^ that's really helpful.
post #16 of 16

Yes, actually the ONE3 and the Pro battery use the same recharging unit. The Pro battery is slightly longer (couple mm) and slightly narrower then the ONE3 and sports the more durable metal clip. It is also about $30 more expensive but I would contend it is well worth the money/upgrade. When skiing all day in the high country I typically have three sets of batteries always charged and ready to go. There is something to be said about having comfortable feet when skiing...

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