Stay warm, dry, and comfortable during cold-weather activities with the Men’s LIFA® Merino Midweight Half-Zip Base Layer from Helly Hansen. This advanced base layer combines the natural softness and insulating power of 100% Merino wool with the superior moisture-wicking performance of LIFA® fibers in a smart 2-layer construction. The result is breathable warmth that keeps you comfortable, dry, and active all day, whether you’re skiing, hiking, or enjoying outdoor adventures. The flat-lock seams prevent chafing, while the non-itch fabric ensures all-day comfort next to the skin. Lightweight yet effective, this half-zip base layer is a versatile foundation for any cold-weather layering system.

Key Features:

LIFA® Merino 2-Layer Construction: Combines natural Merino wool warmth with LIFA® fiber moisture management
100% Merino Wool Exterior: Soft, breathable, and odor-resistant
Flat-Lock Seams: Minimize chafing and increase durability
Non-Itch Fabric: Comfortable for all-day wear
Half-Zip Design: Adjustable ventilation and easy layering
Quick-Dry Performance: Dries quickly during activity
ZQ Certified Wool: Ethically sourced and sustainable

Performance Ratings:

Insulation: 3/6
Breathability: 6/6
Lightness: 4/6
Waterproofness: 1/6
- Quick dry - The material doesn't have any membrane or DWR treatment

Lifa ® Merino: Warm + Dry = Comfortable. The combination of insulating fibres, moisture management and soft, lightweight fabrics allows you to stay comfortable in variable conditions. LIFA’s 3-step moisture management system works seamlessly to protect you in cold temperatures.

Helly Hansen Men's Jackets (in)

Size	Body Height	Chest	Waist	Hip	Center Back Sleeve
XS	5'8"	36.5	31.5	36	32
S	5'9"	38	33	38	32.5
M	5'10"	40.5	35.5	40	33.5
L	5'11"	43	38	42.5	34.5
XL	6'1"	46	41	45.5	35.5
XXL	6'3"	49	44	49	36

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Collections

Men's Apparel & Accessories

Ranger MTB Pant

Defend MTB Pant

Lifa Active Crew Cobalt

Carmel Zero Mitt

Men's Micro-Elite Chamois Zip-T

Lifa Merino Midweight Pant

Lifa Active Pant

Men's LIFA Merino Midweight 3/4 Base Layer Pants

Men's Micro-Elite Chamois Tight

Men's LIFA Merino Midweight Half-Zip Base Layer

Lifa Active Half Zip

Leather Titan GTX Glove