Stio Colter Mountain Slip Review

Stio Colter Mountain Slip Review by Erin Trail The Stio Colter Mountain Slip are a perfect option to keep your feet cozy and comfortable during cooler months. This slipper is a great option for both around the house, around camp, and apres outside activities. It is purpose to be equally at home in any of…

Erin Trail

November 7, 2025

4–6 minutes

shoes, slippers, stio

Stio Colter Mountain Slip

Review by Erin Trail

The Stio Colter Mountain Slip are a perfect option to keep your feet cozy and comfortable during cooler months.

This slipper is a great option for both around the house, around camp, and apres outside activities. It is purpose to be equally at home in any of those scenarios, offering both style, function, and comfort.

The Stio Colter Mountain Slip is available in whole sizes. Stio recommends that people size up to the next whole size, but I actually went down to the nearest whole size and I found that they fit me well.

Details

Easy slip on / slip off wearability
Heel folds down for even easier wearing
Fleece lining throughout the inside of the footwear
Traction rubber outsole to keep you steady on your feet

I tore my plantar plate several years ago and my feet have a really hard time on the hardwood floors in my home. I’m always on the hunt for a slipper type of shoe that is supportive and can do double duty outside of the house.

The Stio Colter Mountain Slips have been really great this fall. The are more structured slip-on shoe than a typical slipper. They have a soft EVA foam midsole that is fairly supportive. The fleece liner is medium pile and has been wearing well – without looking straggly. They are also really easy to pop on and off. I’ve been wearing them as house slippers for the past month and my feet have been very happy in them.

The Stio Colter Mountain Slips have also been great to wear early mornings to the gym, when the air temperatures are chilly. The outer construction is lightly insulated to keep your toes, toasty. The upper construction is a thicker quilted polyester that can handle time outside. The tread is also more than enough to handle parking lots and trips to the mailbox.

The Stio Colter Mountain Slip are also easily packable, coming in at around 7 oz per shoe. These would be a great option for camping or winter hut trips, providing enough coverage and durability for quick trips outside. They’re also very packable, making them an easy comfort choice for a destination ski trip or holiday travels.

Closing Thoughts

The Stio Colter Mountain Slip is a great option for those who want slipper comfort in a shoe that can be worn outside of the home. Stio has made these slippers durable and ready for apres outdoor adventures, with a rubber treaded sole and an abrasion resistant upper. The slippers are also really comfortable, with just the right of cushion and fleece.

The Stio Colter Mountain Slip is available for both men and women in a variety of colorways.

Erin Trail

Trail Boss of Stoke

Erin Trail’s hobby is collecting hobbies. She’s a 5th Generation Coloradan and grew up exploring the outdoors on family camping trips and hikes. Her first backpacking trip was at eight years old to Grizzly Reservoir – she proudly carried all of her own gear those 3 miles from the main parking lot to the Reservoir.

Erin is an adult-onset athlete who started as a Masters Swimmer and then developed into a triathlete. She has completed 5 Ironman races and nearly 20 x 70.3 distance Ironman races, including the World Championship in Lahti, Finland, in 2023. In 2025, she raced for Team USA in Pontevedra, Spain for the World Triathlon Cross Tri World Championship. She placed 9th in her age group and was the 1st American woman in her age group.

Erin Trail Spain Bike — Erin Trail on her mountain bike at the World Tri Cross Triathlon World Championship race

Stio Colter Mountain Slip Review 1 — Erin Trail on her running at the World Tri Cross Triathlon World Championship race

Somewhere along her triathlon journey, she picked up deep love of cycling. Cycling encouraged her to see landscapes in a new way, learn new skills and to develop self reliance; now she often goes and does Type 2 rides just to see if she can do it. She’s got all the bikes: gravel, mountain, fat bike, time trial and road.

She is even known to combine her love of camping and cycling and go off on solo 24 hour overnight bikepacking trips in the mountains of Colorado. In addition to bikes, she teaches yoga, lifts weights, skis, SUPs and has recently purchased a campervan.

Erin is a former Montana park ranger with a degree in environmental engineering. She loves getting into technical details while putting her gear (and herself) through the paces. She shares her home in Colorado with her husband, Will, and her 3 cats (Zipper, Brewtus, and Simcoe).

Fall and winter 2025 will bring Erin to the “Adventure Side”, with many camping, vanlife, bikepacking, and mountain bike rides. Once the snow flies, she can be find resort skiing, fat biking, and triathlon training (inside and outside).

2026 will bring a National Championship Cross Tri race, a National Championship Road Sprint and Olympic Distance race, and hopefully a chance to represent Team USA once again in 2027 in Edmonton, Canada. She’ll also save lots of room for adventure time with her friends and husband.

When not adventuring, she can be found on a sunny patio somewhere, drinking beers with her husband.

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