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DESIGNED FOR: Men’s lightweight insulating Merino long sleeve half zip thermal shirt designed from 100% Merino wool. It’s a versatile, comfortable base layer providing breathable warmth for increased comfort during high-intensity activities like running, skiing, snowboarding, hiking, mountaineering and everyday wear.

175 WARMTH SYSTEM: Perfectly balancing warmth and lightness, our 175 base layers are ideal for warm days outdoors. Made with 100% merino wool, it's a classic, all-purpose base layer that helps to regulate body temperature while remaining breathable in all weather conditions.

100% MERINO WOOL MATERIAL: Soft 100% pure Merino fibers that were hand-picked for strength and softness to create a luxurious fabric that naturally breathes, regulates body temperature, wicks moisture, and feels soft against the skin. Rib fabric provides stretch and increased comfort for all-day wear.

HALF ZIP DESIGN: The versatile half-zip design ensures easily adjustable ventilation, making it suitable for varying temperatures and activities.

SIZING & CARE: Slim fit construction provides a snug, close-to-body fit ideal for low-bulk layering. Machine Washable; line dry in the shade.

Ready for Adventure: Always be prepared for adventure or daily activities with the Icebreaker Merino Anatomica Merino Wool T-Shirt for men! This base layer for men is designed to be breathable, versatile and provide reliable comfort anywhere.

Durable and Lightweight: These men’s shirts are built with a blend of Merino Wool fibers wrapped around a nylon core - ensuring that each thermal shirt is durable, super soft, and helps regulate your body temperature in any weather conditions.

Everyday Comfort: With short sleeves and a classic V-neck, these tee shirts are super soft and stretchy, with a lightweight, snug fit for low-bulk layering in winter or summer. Plus, these thermals for men have flatlock seams to reduce chafing.

Perfect for Layering: Made for active lifestyles, this Merino wool base layer men’s t-shirt is the perfect way to stay comfortable in any weather conditions! Our men’s thermals resist odor, manage moisture, and are ideal for skiing, hiking and more.

Icebreaker Merino: At Icebreaker Merino, we want to create relationships between people and nature, and we offer men’s shirts, thermals and a men’s base layer for cold weather that is designed to provide natural performance with non-synthetic fibers.

Your Cold Weather Adventure: Enjoy year-round layering with the Icebreaker Merino 175 Everyday Men’s Long Sleeve Wool Shirts! This 100% wool shirt for men features a stylish crewneck, and is the perfect men’s base layer for winter activities.

Reliable Materials: Made with 100% Merino wool, these long shirts for men are ideal thermals as a wool base layer for men in cold weather. Naturally odor-resistant, this men’s hiking shirt helps regulate the temperature in all weather conditions.

Easy Layering: Perfect for skiing, snowboarding or any cold weather adventure, this Merino wool underwear for men’s layering is breathable, with a slim, stretchy fit for convenient, low-bulk layering. Plus, our Merino shirt helps manage moisture.

Versatile and Comfy: These classic men’s thermal underwear crew neck shirts are incredibly soft, and feature ribbed fabric for easy stretch and comfort. Available in multiple colors, these thermal clothes for men will keep you stylish and comfy!

Inspired by Nature: At Icebreaker Merino, we want to create relationships between people and nature, and our Merino wool shirt and thermal underwear for men are designed to provide natural performance with quality materials and no synthetic fibers.

Updated design

Icebreaker branded brushed elastic waistband

Flatlock seams prevent chafing

Inseam: 74.6cm/291/4"- size M

Gusset for comfort and mobility

Updated design

Offset shoulder seams prevent pack rub

Flatlock seams prevent chafing

Underarm gusset for comfort and mobility. 100% Merino Wool

Set-in sleeve construction with raglan back

Updated design

Zip neck collar for temperature regulation

Offset shoulder seams prevent pack rub

Flatlock seams prevent chafing

Forward side seams for comfort

WOOL HALF ZIP FOR MEN: This half zip long sleeve top for men fits effortlessly under mid & outer layer pieces for the ultimate cool weather adventure. The odor resistant and comfortably worn top helps regulate your temperature.

WOOL LIGHTWEIGHT SHIRT: This wool top for men has flatlock seams to prevent chafing & underarm gusset for comfort & mobility. This wool base layer is crafted of 100% merino wool.

MERINO WOOL LAYERS: Stay warm from head to toe in Icebreaker outdoor clothing gear. Keep covered in wool gloves, glove liners, mittens, bras, wool base layers such as tops, under shirts, leggings, bras, underwear & more.

WOOL & CASUAL: Whether skiing, camping, hiking or daily wear, Icebreaker provides clothes for men, women & children - keeping the whole family covered in jackets, beanies, scarves, sweaters, pants, leggings, underwear & more wool clothing.

ICEBREAKER LONGEVITY: We use 85% merino wool & less synthetic material than the traditional outdoor standard. With multi-purpose & timeless clothing our natural alternative to synthetics enhances the relationship between people & nature.

Weave type: Woven

Sport type: Outdoor Lifestyle

Ready for Adventure: Enjoy the ultimate cold weather adventure with the Icebreaker Merino Women’s Standard 175 Everyday Half Zip Pullover with Long Sleeves! This Merino wool base layer for women is lightweight and ideal for outdoor activities.

Incredibly Soft Zip Top: These hiking shirts for women are made with 100% Pure Merino Wool, an annually renewable resource that naturally helps regulate body temperature and resists odors. This women’s base layer is moisture managing with a slim fit.

All Day Comfort: These women’s thermal tops are long sleeve, with a half-zip for breathable versatility, and forward set side seams for lasting comfort. Our ski thermals for women have stretchy ribbed fabric and will fit under mid or outer layers.

Perfect for Layering: Designed for cool weather adventures, these thermal shirts for women are perfect for running, hiking, or camping! Ideal as a wool base layer for women, this Merino wool shirt will keep you warm when skiing or snowboarding.

Icebreaker Merino: At Icebreaker Merino, we want to create relationships between people and nature. We offer a snowboard and ski base layer for women for cold weather that is designed to provide natural performance with non-synthetic fibers

Second Skin Wool Leggings: Harness natural performance with the Icebreaker Merino Everyday 175 Long Warm Leggings and Men’s Undergarments! These insulated long johns for men are the perfect foundation for an everyday cold weather men base layer.

Reliable Performance: The ideal warm leggings for men, this 100% Merino wool base layer for mens use is ready for any active day! Our men’s long underwear is naturally odor-resistant, and will keep you warm when it’s cold and cool when it’s warm.

Always the Perfect Fit: Perfect for summer nights at camp or a winter adventure, these warm men’s leggings have a contoured, slim fit for smooth layering. Our men’s thermals and winter pants for men are super soft and will help to manage moisture!

Designed for Comfort: With ribbed fabric for stretch, our men’s winter leggings and Merino wool thermal underwear have a gusset design for mobility, a contoured pouch with a functioning fly, flatlock seams to reduce chafing, and an elastic waistband.

Inspired by Nature: At Icebreaker Merino, we believe in creating a relationship between people and nature, and our long underwear and thermal clothes for men are designed to provide natural performance with quality materials over synthetic fiber.

DESIGN: The Oasis Balaclava is made from 200gm Merino jersey fabric is soft, yet breathable and equipped with a ventilation flap, it offers premium protection from the elements. It’s perfect for use in super-cold conditions and ideal for hiking, skiing, camping, and all active winter days.

200 OASIS WARMTH SYSTEM: Made from our most versatile 100% Merino wool jersey fabric, the Oasis is designed for next-to-skin softness, while allowing maximum movement. The 200 weight – not too heavy, not too light – it's your go-to for year-round layering performance and everyday comfort.​

MOISTURE WICKING: 100% Merino wool jersey fabric that naturally breathes, regulates body temperature, wicks moisture, and feels soft against the skin for comfortable all-day wear.

FIT & SIZING: One size. Double layered headband. Regular fit – neither snug nor loose.

CARE: Machine washable on cold, delicate cycle. Line dry in the shade, do not tumble dry.

Overlap opening for better protection against the elements

Ventilation flap for enhanced breathable

Contoured hem for complete coverage

Icebreaker wrap label