200 ZoneKnit™ Merino Long Sleeve Half Zip Thermal Top - Icebreaker (US)

A midweight merino base layer top designed to help regulate temperature during high-intensity activity, the 200 ZoneKnit™ Long Sleeve Half Zip features 100% pure and natural merino wool.

200 ZoneKnit™ Merino Long Sleeve Crewe Thermal Top - Icebreaker (EU)

200 ZoneKnit™ Merino Long Sleeve Half Zip Thermal Top - Icebreaker (US)

260 ZoneKnit™ Merino Long Sleeve Half Zip Thermal Top - Icebreaker (CA)

Featuring our most versatile merino jersey fabric, the 200 Sonebula Long Sleeve Half Zip Hood is a technical base layer that provides ample warmth

Men's Merino 200 Sonebula Long Sleeve Half Zip Thermal Hood

A midweight merino base layer top designed to help regulate temperature during high-intensity activity, the 200 ZoneKnit™ Long Sleeve Half Zip

Women's 200 ZoneKnit™ Merino Long Sleeve Half Zip Thermal Top

Icebreaker Merino 200 Sonebula Long-Sleeve Half Zip Hoodie - Men's

Merino 200 Zone Seamless Long Sleeve Half Zip Thermal Top - Icebreaker (CA)

Merino 200 Oasis Long Sleeve Half Zip Thermal Top - Icebreaker (US)

Icebreaker Merino Women's 260 Tech Long Sleeve Half

Campri Womens Thermal Top Baselayer Compression Armor Skins Long Sleeve Crew

300 MerinoFine™ Polar Long Sleeve Half Zip Thermal Top - Icebreaker (CA)

Women's Solid Color Thermal Top

Time and Tru Women's Thermal Top with Long Sleeves, 2-Pack, Sizes

Beat the freeze! shoppers are racing to buy this £14.99 thermal top that will keep you 'fantastically warm' during the cold snap