THE NORTH FACE Thermoball Traction Mule V Winter Shoe - Insulated out

In this review of the Thermoball Traction Mule V, the bottom line is simple: these are insulated slip-on winter shoes best suited for anyone who wants quick, cushioned warmth around camp, on icy decks, or running short outdoor errands. The reviewer found the defining strength to be the combination of ThermoBall Eco insulation and a fleece-lined collar that delivers steady warmth without feeling bulky, while the durable ripstop upper with a DWR finish keeps light moisture at bay.

Key Features

• Slip-in comfort: A collapsible heel and stretchy side panels make getting them on and off fast, ideal for campsite use or quick trips outside.
• Thermal insulation: ThermoBall Eco insulation made from 100% recycled polyester retains warmth even if damp, keeping feet comfortable in cold, wet conditions.
• Water-resistant upper: The ripstop 100% recycled polyester upper with a non-PFC DWR helps repel light snow and moisture during short exposures.
• Oso fleece collar: The soft fleece-lined collar adds a cozy seal at the ankle for extra comfort and reduces chill at the entry point.
• Grippy outsole: A rubber outsole with up to 20% recycled rubber provides reliable traction on slick floors and icy walkways.
• Sustainable materials: Multiple components use recycled content, which reduces waste while maintaining performance.

Who It's For

The Thermoball Traction Mule V is ideal for campers, cabin-goers, and anyone who needs a warm, easy-to-wear shoe for short outdoor tasks or transitional indoor/outdoor use. Its slip-on design and modest bulk make it a practical choice for cold-weather lounging, quick grocery runs, or as a standby overboot at trailheads.

These are not a substitute for full hiking boots or insulated mountaineering footwear; people planning long hikes, heavy slush, or deep snow excursions should look for fully waterproof, high-ankle boots with aggressive lug patterns. Also, shoppers who need precise sizing should try them on first, since some users report a tighter fit.

Pros & Cons

Pros

• Warm and comfortable thanks to ThermoBall Eco insulation and a fleece-lined collar.
• Easy on/off with a collapsible heel and stretchy side panels for quick transitions.
• Water-resistant ripstop upper and DWR finish fend off light moisture and snow.
• Solid traction from a rubber outsole that includes recycled content.

Cons

• Fit can run small or feel tight for some wearers, so sizing up may be necessary.
• Not intended as a replacement for fully waterproof, heavy-duty winter boots in deep snow or prolonged wet conditions.

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
Collar	Oso fleece-lined collar
Outsole	Rubber with up to 20% recycled rubber
Design	Slip-on mule with collapsible heel and stretchy side panels

Our Verdict

The Thermoball Traction Mule V is a dependable, low-effort winter shoe that delivers the warm, cushioned comfort many people want for short outdoor tasks and camp life. With recycled materials, water-resistant treatments, and a grippy rubber sole, it offers strong everyday value for those who prioritize ease and warmth over heavy-duty waterproof performance.

Frequently Asked Questions

Are these waterproof?
They are water-resistant with a DWR-treated ripstop upper, designed to repel light moisture and snow but not to be fully waterproof in prolonged wet conditions.

Do they run true to size?
Fit varies by foot shape; some users report they run small or feel tight, so trying on or sizing up may be advisable.

Can I wear them indoors and outdoors?
Yes, they work well both indoors and outdoors for short periods thanks to the cushioned insulation and grippy rubber outsole.