Montane Dart XT Long Johns

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Montane Dart XT Long Johns are premium thermal baselayer bottoms for high-exertion activities in cold weather. They’re made from Montane’s Apex Thermo Eco recycled polyester fabric and have excellent insulation, moisture management, and odor resistance.

Montane says: 

The ultimate high-alpine or expedition baselayer. Polygiene treated Apex Thermo Eco fabric with a brushed back offers long-term comfort whilst its 4-way stretch allows for unrestricted dynamic movement without compromising thermal efficiency.

Our Verdict

The Montane Dart XT Long Johns is an excellent choice for a premium thermal baselayer bottom for high-exertion activities in icy weather conditions. These long underwear are made from Montane’s Apex Thermo Eco recycled polyester fabric and provide excellent insulation and moisture management.

The brushed interior traps warmth next to your skin, while the 4-way stretch construction allows unrestricted movement without compromising thermal efficiency. The Polygiene odour-resistant treatment helps minimise funky smells during extended use.

Key features like the stretchy waistband, flat seams, and trim fit enhance overall comfort—the long johns layer is smooth without excess bulk.

– Reviewed by Ultralight Outdoor Gear

Features

• Elasticated waistband for secure comfortable fit
• Low profile seams throughout for improve comfort next to skin
• Trim Fit

Specifications

• Small weighs: 154g
• Medium weighs: 164g
• Large weighs: 169g
• XLarge weighs: 181g

Material & Construction

• Main – Apex Thermo Eco 175g/m2 88% Recycled Polyester 12% Elastane excels at maintaining comfort in colder conditions.
• Brushed back with 4 ways stretch performance that works alongside high wicking ability and polygiene permanent anti odour.

Help & advice:

• About Montane
• The Ultimate Guide to Lightweight Baselayers