XT Alziro Men’s Thermal Top

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

Take it higher

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.

41% Polyester
33% Merino Wool
26% Polypropylene

Weight Size M 7.1 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)
  • Longer back hem length, crew neck, raglan sleeves, thumb loops and a drop-tail for added draft protection
  • Combination of thermal fibres keeps you warm, dry and comfortable in extreme conditions
  • Double-face knit construction of merino wool, polyester and polypropylene
  • Moisture-wicking, breathable and quick-drying
  • Thermal top has an elongated back for warmth and comfort
  • Flat-seamed to help reduce chafing
  • Shaped cuffs for additional warmth with thumb loops 
  • Fit: Next-to-skin

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