Men's Thermoball Traction Mule V Winter Shoe - Insulated Slip-On

In this review of the Men's Thermoball Traction Mule V, the bottom line is simple: these are warm, easy slip-on winter shoes built for relaxed outdoor use and cold mornings. The shoe stands out for its use of ThermoBall Eco insulation and a soft Oso fleece-lined collar that deliver dependable warmth without bulk, making it ideal for base camp, apres-ski lounging, or running quick errands when you need insulated, water-resistant footwear. Fit can vary across feet, but most buyers praise the comfort and warmth as the primary reasons to buy.

Key Features

• Slip-in comfort: The collapsible heel and stretchy side panels let you put the shoe on quickly and enjoy cushioned warmth for short outdoor trips or indoor wear.
• ThermoBall Eco insulation: Made from 100% recycled polyester, the insulation retains heat even when wet so feet stay warm in damp winter conditions.
• Water-resistant ripstop upper: The upper is made from recycled polyester with a non-PFC DWR finish to repel light moisture and snow during brief exposure.
• Grippy rubber outsole: A traction-focused outsole with up to 20% recycled rubber provides steady footing on slick decks, icy walkways, and cold cabin floors.
• Comfort collar: The Oso fleece-lined collar adds soft cushioning around the ankle for better overall wearability during extended indoor use.

Who It's For

These shoes are best for men who want an insulated slip-on for casual outdoor use, campsite downtime, or quick errands in cold weather. They suit people who value warmth, sustainable materials, and easy on-and-off convenience more than technical hiking performance.

They are less suitable for long-distance hiking, heavy wet-weather use, or those needing roomy toe boxes; several users report the fit can feel snug across the top of the foot, so anyone with wide forefeet may prefer a different style or a half size up.

Pros & Cons

Pros

• Dependable warmth from ThermoBall Eco insulation even in damp conditions.
• Easy slip-on design with a collapsible heel for quick on/off convenience.
• Durable, water-resistant ripstop upper and a fleece-lined collar for comfort.
• Steady traction from a recycled-rubber outsole for slippery surfaces.

Cons

• Fit is mixed: some users find the top of the foot tight, so sizing may require trial and error.
• Not intended as a waterproof boot for extended immersion or heavy rain.

Specifications

Brand	The North Face
Model	Thermoball Traction Mule V
Insulation	ThermoBall Eco (100% recycled polyester)
Upper	Ripstop 100% recycled polyester with non-PFC DWR
Outsole	High-traction rubber (up to 20% recycled rubber)
Collar	Oso fleece-lined collar

Our Verdict

The Men's Thermoball Traction Mule V is a solid choice for anyone who needs warm, comfortable slip-ons for camp, cabin, or quick outdoor tasks; its recycled insulation and water-resistant upper add practical value. For those seeking a technical waterproof boot or a roomier fit, other options are better, but for casual winter wear this shoe represents good value and reliable performance.

Frequently Asked Questions

Are these shoes waterproof?
They are water-resistant with a DWR-treated ripstop upper and shed light moisture and snow, but they are not fully waterproof for prolonged immersion.

Do they run true to size?
Fit is mixed: many find them true to size, but some report a snug fit across the top of the foot; consider trying a half size up if you have a higher instep.

Can they be used outdoors in winter?
Yes, they are suitable for base camp, cabin use, and short outdoor trips in cold, damp conditions thanks to ThermoBall Eco insulation and a grippy outsole.