Icebreaker Merino 300 Original Long Sleeve Half Zip

$279.99

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Heavyweight merino midlayer with reliable temperature regulation and natural odour resistance, ideal for big days in the mountains or cool-weather travel.

The Icebreaker Womens Merino 300 Original Long Sleeve Half Zip is a classic zip-neck pullover built from 100% merino wool in a heavyweight 300-weight knit for serious warmth and all-day comfort. The pure merino construction naturally breathes, manages moisture and resists odour, so you can wear it across multi-day missions without feeling clammy or needing constant washes. A reliable half zip lets you dump heat quickly on climbs or in the car, while the soft rib collar seals in warmth when fully zipped. Forward-set shoulder seams and a clean, regular fit sit comfortably under packs and outer layers, making this a go-to midlayer from local missions to overseas trips.

Waterproofing	Not waterproof; designed as a merino midlayer to pair with a shell when you need weather protection
Warmth	Heavyweight 300 merino wool provides high insulation and reliable thermal regulation for cold to very cold conditions
Fit	Regular fit that layers easily over base layers and sits smoothly under shells without restricting movement

100% merino wool fabric: Offers natural warmth, breathability, and odour resistance for versatile, low-maintenance wear.
300-weight knit: Heavyweight construction traps heat efficiently while still allowing excess moisture to escape during higher output.
Half-zip collar: Gives on-the-fly ventilation control and lets you fine-tune comfort as conditions change.
Soft rib collar: Adds structure and comfort around the neck, sealing in warmth when fully zipped.
Forward shoulder construction: Reduces friction under pack straps for more comfortable hiking and travel days.
Thumb loops: Help keep sleeves in place and offer extra coverage when the temperature drops.
All-rounder layering piece: Works as a standalone top in cool weather or as a warm midlayer under a shell when it turns properly cold.

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