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Men’s 300 MerinoFine™ Polar Long Sleeve Half Zip Thermal Top

$369.99

Find your perfect base layer for any climate or activity
Cool Conditions
Warm Conditions
Low Intensity
High Intensity
125
ZoneKnit™
175
Everyday
200
Oasis
200
Sonebula
200
ZoneKnit™
260
Tech
260
Vertex
260
ZoneKnit™
260
ZoneKnit™ Seamless
300
MerinoFine

Details

Featuring soft ultra-fine premium merino fibres, this merino base layer will keep you warm and comfortable on the coldest of days.

Features & details
  • MerinoFine™ - Ultrafine 15.5-micron merino wool fibres feel soft and warm next to skin
  • Half Zip for varying temperatures
  • Thumb loops to help keep your sleeves in place and for added coverage
  • Flatlock seams to help reduce friction
  • Drop tail hem for added coverage
  • Zipper chin guard to prevent friction
  • Layer Base Layers
  • Style BA56Q9001
  • Product weight Medium = 320g /11 oz

Good for:

  • Snow Sports
Fabric & care
Fabric content

100% Wool Exclusive of decoration

Warmth system: 300
  1. 75
  2. 150
  3. 200
  4. 260
  5. 300
  6. 460+
Merino fiber micron: 15.5µ
  1. 15.5
  2. 16.75µ
  3. 18.0µ
  4. 19.25µ
  5. 20.5µ
  6. 21.75µ
  7. 23.0µ
  8. 25.5µ
Care

Machine wash cold (30c); delicate cycle. Wash with like colors. Do not use softeners. Fasten all closures to wash and dry. Do not bleach. Do not tumble dry. Flat dry in shade. Do not iron. Do not dry clean.

Fit & sizing

Model measurements

Height: 188cm / 6'2". Waist: 77cm / 30". Beau is wearing size M.

Key product measurements

Height: 69cm (based on size M); Width: 43.5cm (bottom opening width, size M)

Regular Fit

Slim

Delivery & Returns

Delivery

  • Free standard delivery on orders over $99
  • Delivery in 3–5 business days (Mon–Fri, excluding public holidays)

Returns

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Why choose icebreaker merino wool?

Natural odor resistance
Natural odor resistance

Merino wool neutralizes unpleasant odors by absorbing odour molecules into its fibers, making them less detectable by the human nose.

Moisture management
Moisture management

Merino fibers efficiently manage moisture, absorbing it from your skin and releasing it into the atmosphere. It can absorb up to 35% of its weight in water without feeling wet.

Machine washable
Machine washable

icebreaker merino wool garments undergo special anti-shrinkage treatment, helping to resist deformation and pilling.

Temperature regulation
Temperature regulation

The thermo-regulation properties of merino wool adapt to your body and external conditions, so you can stay warm in the cold and cool in the heat.

Recently Viewed

Overall rating: 4.6923075 / 5 from 26 reviews.

AI Generated Review Summary

Summary topics

Review topics: ["fit","weight","quality","colour","thickness","shirt","works","clothing","base layer","buy"].

Review highlights

Reviews

My new favorite! Thick and

"My new favorite! Thick and cozy."

Sean P. (5/5)

As Good as I Hoped

"Quality product, warm and perfect fit. Is great over a thermal and/or under a jacket so works well for layering also. So all-in-all, I am very happy with this purchase."

Rocket (5/5)

Very soft and warm

"It is very comfortable and soft on the skin. Does exactly what it says on the tin - keeps you warm in very cold conditions."

Mango (5/5)

Icebreaker 300 top

"Good quality clothing, fast delivery, warm and cosy"

Al (5/5)

Excellent product

"Good weight fabric and incredibly soft. Almost silk like feeling against the skin. Very comfortable and warm so far and looking forward to seeing how well it performs over time. Really impressed so far."

D (5/5)

Solid Base Layer

"I was really looking for a heavy base layer and purchased these top & bottoms immediately. The quality is still obvious. Warm, but still breathable, the Size medium is just a bit snug on my 6'0"" frame but still fine. I just completed a cold weather exercise the military where it was -15C to -23C. This is what I wore all weekend."

Sarge (5/5)

Warm but quality control issue

"Use it for cold weather hiking and biking. It is warm and cozy. The zipper does not work properly as I need to twitch it left/right along the upper end to make it zip all the way. The zipper is anything but smooth as the other icebreaker items including a cardigan are, that i own. For a size large it needs to be longer to work optimal as an undershirt. The material is superb."

Portalite (4/5)

Enfin la bonne épaisseur 300 pour les sorties à-25 degrés .

"Enfin la bonne épaisseur 300 pour les courses à -25 degrés celsius. Je le porte avec une veste hybride icebreaker. Combinaison parfaite . Chaud, respirant, doux, confortable . Je mesure 6p 2po pèse 220 lbs taille 35 et le xl est parfait"

Pop (5/5)

Disappointing for a 300

"Having other 300 and for the price. . . This is just a glorified 260. I think this is as far as my run with icebreaker will go."

Lu C. (1/5)

Loyal icebreaker user for years

"I wear icebreaker everyday but love it especially for my remote arctic whitewater paddling trips. Never fails, always warm, fast drying and comfortable. Love icebreaker ??"

Eyeguy (5/5)

Q&A