Featuring 125GSM Nuyarn merino fabric technology for superior warmth to weight ratio and 5x faster drying, the ¼ zip Boulder 125 offers a modern fit with unrivalled durability. Strategic eyelet placement delivers increased breathability and flatlock seams means no chafing. Designed for comfort and performance, this is a versatile thermoregulating garment from the prestigious A/SYS-1 range.

• Superior Bluesign® approved 125GSM Nuyarn merino fabric technology offers extra loft for an unmatched warmth-to-weight ratio, 5x faster drying, and remarkable long-term durability

• Superfine 18 micron non-mulesed 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

• YKK ZIPPER

85% Superfine Nuyarn® merino wool, 15% Nylon