---
title: "Montane Dart XT Long Johns"
name: "Montane Dart XT Long Johns"
brand: "Montane"
description: "Men's stretchy thermal underwear ideal for hiking, running, and long treks in cold weather and winter."
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  - name: "Montane Dart XT Long Johns"
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last_updated: "2026-10-13"
---

# Montane Dart XT Long Johns

Brand: Montane · Category: [Men's pants](/c/clothing/men-s-clothing/men-s-pants.md)
Clothing size: L, M, XL, S · Sex: Men · Material: Apex THERMO Eco (175 g/m², 88 % polyester, 12 % elastane)

## Offer

- Price: €43.90
- Availability: In stock
- Condition: New
- Buy on the website: [HTML product page](/p/montane-mens-dart-xt-long-johns)

## Description

Men's stretchy thermal underwear ideal for hiking, running, and long treks in cold weather and winter. The bottoms are made of comfortable, breathable, and warm APEX THERMO ECO material with a finely brushed inner side for maximum comfort and thermal insulation. To neutralize odors, they are treated with Polygiene antibacterial treatment.

Men's stretch thermal underwear that keeps you warm even in more challenging conditions.

## Dart XT Long Johns

Insulated men’s bottoms Dart XT Long Johns from the new Montane collection are a continuation of the popular [Dart Thermo Long Johns](/p/montane-mens-dart-xt-long-johns) model. Just like their predecessor, they serve excellently as the **main base laye**r for hiking and running in cold weather, as an **additional layer to increase thermal insulation** in winter, or for **sleeping**.

Dart XT Long Johns offer a **more sophisticated and comfortable elastic waistband** compared to the older version, a **slightly higher gram weight** of the material used, and above all, they are designed **without an open fly**, although the product photos depict a fly. In appearance and construction, they resemble leggings more.

Constructed from 88% **APEX THERMO ECO material** (100% recycled polyester) and 12% elastane. The inner side features **softly brushed fibers** for maximum comfort and increased thermal comfort.

The Dart XT base layers have all the necessary properties that you can expect from thermal underwear, in our opinion:

- optimal thickness (material weight 175 g/m²) for cooler seasons of the year,
- Polygiene® antibacterial treatment that neutralizes odor,
- flexibility in all directions due to 12% elastane blend,
- breathability and quick moisture wicking,
- lightweight and yet good warmth.

**WARNING**: The product photos depict an open fly on the bottoms, however, the goods supplied by the manufacturer do not have this fly. However, the anatomically shaped cut is maintained thanks to the double wedge without a vent.

## Specifications

- weight: 180 g (size M)
- material: 88% recycled polyester (APEX THERMO ECO), 12% elastane
- trim fit for increased thermal comfort
- soft elastic waistband
- flat locked seams for greater comfort and durability

### Polygiene®

An important feature of Dart synthetic clothing is the Polygiene **antibacterial treatment**, which **neutralizes odor** caused by bacteria. You **don’t need to wash it right after a single sweat session**, and it will keep you going for several days in a row.

Polygiene technology uses low concentrations of silver salt (silver chloride), which has antimicrobial properties. Polygiene is also approved by **bluesign®**, meaning it is manufactured in a way that is safe for the environment, workers, and those wearing the treated clothes.

## Specs

- Color: Black
- Clothing size: L, M, XL, S
- Sex: Men
- Material: Apex THERMO Eco (175 g/m², 88 % polyester, 12 % elastane)
- Material composition: 88% polyester, 12 % elastane
- Weight: 180 g
- Woocommerce product id: 96780
- Brand: Montane

## Variants

- Montane Dart XT Long Johns - XL · SKU MDXLJBLAX16 · EAN 5056601020737 · €43.90 · In stock · Black, XL
- Montane Dart XT Long Johns - S · SKU MDXLJBLAB16 · EAN 5056601020706 · €43.90 · In stock · Black, S
- Montane Dart XT Long Johns - M · SKU MDXLJBLAM16 · EAN 5056601020713 · €43.90 · In stock · Black, M
- Montane Dart XT Long Johns - L · SKU MDXLJBLAN16 · EAN 5056601020720 · €43.90 · In stock · Black, L

## Related

- [Montane Terra Route Pants](/p/montane-mens-terra-route-pants.md)
- [Darn Tough Men's Number 2 Micro Crew Midweight](/p/darn-tough-number-2-micro-crew-midweight-mens.md)
- [Montane Tenacity Pants](/p/montane-mens-tenacity-pants.md)
- [Darn Tough Men's Light Hiker Micro Crew Lightweight](/p/darn-tough-light-hiker-micro-crew-lightweight-mens.md)
- [Warmpeace Rond](/p/warmpeace-rond.md)
- [Gramino Trail Slang Men's](/p/gramino-tshirt-trailslang-mens.md)
- [Liteway Rain Skirt](/p/liteway-rain-skirt.md)
- [Sea To Summit Lightweight Dry Bag](/p/sea-to-summit-lightweight-dry-bag.md)

## Shipping and returns

- [Shipping and payment](/shipping-payment)
- [Returns](/return-order)

## Images

- ![Montane Dart XT Long Johns](https://media.gramino.com/medusa/b2430fb84e3376b76322551b440d45de-01KWHVN461RQ6TEQ4E2RWN3AJ5.jpg)
- ![Montane Dart XT Long Johns](https://media.gramino.com/medusa/7341a7130de35be9ae51429798f44bc8-01KWHVN498SV6C04CEFBD2Q6MT.jpg)
- ![Montane Dart XT Long Johns](https://media.gramino.com/medusa/f2b97d426b427e34605d2d7af110a3c2-01KWHVN4ARVZPW6FHJ6XFFJVJK.jpg)
- ![Montane Dart XT Long Johns](https://media.gramino.com/medusa/9b39c2f1a42ddbe650ac2b34730fe1dd-01KWHVN491PT6ZTTGF0Q10YSGB.jpg)

## Identifiers

- SKU: MDXLJBLAX16
- EAN: 5056601020737
- Handle: montane-mens-dart-xt-long-johns
- Brand: Montane

This product is also available as [HTML](/p/montane-mens-dart-xt-long-johns).

Category: [Men's pants](/c/clothing/men-s-clothing/men-s-pants.md) · [Sitemap](/sitemap.md)

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