The Boulder 125 T is the first of the A/SYS-1 range and has been designed to add effortless performance in a modern fit. Utilizing an ultra-light Nuyarn 125 merino fabric with matching eyelet knit strategically placed underarm for increased breathability, there is no better combination of performance, comfort, and durability in the world. 

Made in Vietnam by Dar Lon Garment Company Ltd.

Product code 2212101-SSY


  • Superior Bluesign® 125GSM Nuyarn merino offers extra loft for an unmatched warmth-to-weight ratio
  • 5x faster drying
  • Remarkable long-term durability
  • Superfine 18 micron non-mulsed Australian merino Wool for maximum softness and wearability
  • Incredible stretch and recovery
  • Easy Fit offers a modern fit with full coverage
  • Targeted eyelet placements for increased breathability
  • No-chafe flatlock seams
  • Gusseted Armpits
  • Machine Washable
  • Hang-Dry Loop



Mountaineering, Cycling, Climbing, Running


85% Superfine Nuyarn® merino wool 15% Nylon



Fabric Composition

85% Superfine Nuyarn® merino wool 15% Nylon


W-Boulder 125 Tee Sea Spray


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