Most stock ski boot insoles are a joke. Thin bits of foam that collapse after a couple of days. The Sidas Winter 3Feet caught my eye because they actually come in low, medium and high arch versions. That alone makes them stand out, since most brands force a one-shape-fits-all approach. I tested them in my ski boots through a mix of teaching days and freeride skiing, and while they’re a solid upgrade over stock, they still left me thinking the Remind Remedy does the job better.
Buying through our affiliate links supports the site at no extra cost to you.
Full Review
As a skier, I’ve had plenty of long days where my arches give out halfway through and every turn starts to feel sloppy. The Sidas Winter 3Feet insoles seemed like a reasonable fix since they come in low, medium and high arch versions — something most brands don’t bother with. I tested the medium-arch pair in my Lange RX ski boots at Jackson Hole, mixing teaching days with a few hard freeski sessions.
If you’ve ever wished your boots felt a little more supportive without dropping cash on custom orthotics, these are worth a look. Here’s what I noticed after swapping them in.
Sidas Winter 3Feet Specs
The Winter 3Feet comes in three arch choices (low, medium, high), so you can pick the version that matches your foot’s curve instead of forcing a one-size model. They’re trim-to-fit, so you cut them to your boot shell shape. They include a thermal lining to help with cold days (not a heating element, but added insulation). The footbed has moderate cushioning – not plush, but enough to soften impacts without making things sloppy. In ski boots, they’ll take up a little space, but not so much that you’ll need to size up unless your boots are already tight.
1. Fit & Support
The biggest win with the 3Feet is having arch options. If you’ve got flat feet, the low arch stops that “shoved-up” feeling, while high-arch skiers finally get real support without dropping cash on custom orthotics. The heel cup is deeper than stock liners and does a better job of keeping your foot centered. That said, it’s not quite as locked-in as the Remind Remedy, which feels more molded once broken in.
2. Comfort on Snow
Compared to stock insoles, the 3Feet makes a big difference in keeping your stance from collapsing late in the day. I felt less fatigue in my arches after back-to-back teaching days. The downside is that the cushioning feels a little thinner than some snowboard-focused insoles — skiers who like a plush, shock-absorbing ride might want more padding.
3. Durability
I only ran them for a season, but they held their shape and didn’t flatten out like stock liners do after a few weeks. The top sheet shows a bit of wear from sweaty feet and long days, but structurally they stayed supportive. Based on my use, you’ll get at least a season or two before they feel tired.
4. Heat Molding
Here’s where the 3Feet falls short compared to the Remedy. These aren’t heat-moldable, what you buy is what you get. That’s not a dealbreaker if you pick the right arch option, but if you’ve got tricky feet or want that custom-formed feel, you’ll notice the difference.
5. Pros & Cons
Who They’re For
The Winter 3Feet is a solid pick if you want better support than the paper-thin stock liners but don’t want to jump all the way to custom orthotics. They’re especially good if you know your arch type and want something that actually matches it. Skiers who run cold will also appreciate the thermal layer.
Who They're NOT For
If you’ve got really tricky feet or need precise customization, these probably won’t cut it. They’re also not ideal if you like a lot of cushion underfoot. And if you want something you can heat mold, you’ll be better off with the Remind Remedy.
Final Thoughts
The Sidas Winter 3Feet is one of the better off-the-shelf ski boot insoles because of the arch-specific options. They’re supportive, durable and a clear upgrade over stock. That said, they don’t quite hit the all-day comfort of the Remind Remedy (or the Superfeet Winter). If you’re ski-focused and just want something easy that matches your arch, they’re worth it. If you spend every day on snow, I’d still steer you toward the Remedy.
