XT Alziro Men’s Thermal Long Johns

Please note

All measurements listed below are in inches and based on actual body measurements, not garment measurements.
 Chest (in)Waist (in)Hips (in)Inside Leg (in)
XS 36'' 35.5 29.5 35.5 31
S 38" 37.5 31.5 37.5 31.5
M 40" 39.5 34 40 32.5
L 42" 41.5 35.5 41.5 32.5
XL 44" 43.5 37.5 43.5 33
2XL 46" 45.5 39.5 45.5 33
3XL 48" 47.5 41.5 47.5 33.5
mens size chart

How to measure

Chest: Measure around the fullest part of your chest, making sure to keep the tape under your arms and around your shoulder blades.

Waist: Measure around the smallest part of your waist (natural waistline).

Hips: Stand with your heels together and measure around the fullest part.

Inside Leg: Measure from the top of your inner leg along the inside seam to the bottom of your leg.


View sizing guide
US $64.99

Quick Overview

Our XT Alziro will be the first thing you pack for expeditions when experiencing changing weather and exhilarating conditions at higher altitudes. This technical thermal base-layer is constructed of three outstanding thermal fibres: merino wool, polyester and polypropylene. This combination provides insulation and breathability, while the pairing of polypropylene and polyester wicks away moisture that’s crucial to stay warm, dry and comfortable in extreme conditions. The higher back panel of the XT Alziro Men's leggings / long johns will provide extra coverage and padding while wearing packs. Flatseamed seams positioned away from chafing sensitive areas.

This product is part of the Kathmandu Coast to Coast Official Gear List.

41% Polyester,
33% Merino Wool
26% Polypropylene

Weight Size M 6.4 oz

Country of Origin China

  • Technical thermal base-layer ideal for mountain sports
  • Part of our elite XT Series range (exceptional design, extensive testing, extreme performance)
  • Combination of thermal fibres keeps you warm, dry and comfortable in extreme conditions
  • Double-face knit construction of merino wool, polyester and polypropylene
  • Flatseamed seams positioned away from chafing sensitive areas
  • Moisture-wicking, breathable and quick-drying
  • The leggings / long johns have a higher back panel for extra coverage
  • Leggings’ gusseted back and front rise is designed for ease of movement

Customer Reviews