XTM Men’s Merino 230 Long Sleeve Thermal Top

Dial in warmth without the bulk. The XTM Merino 230 Thermal Top is a high-performance base layer made from 100% fine Australian Merino wool. At 230gsm, it’s heavy enough for real cold but breathable enough to handle high-output days. Naturally odour-resistant, itch-free, and cut with raglan sleeves and flatlock seams for full-mobility comfort. Built for snow missions, winter layering, or just surviving a crisp mountain morning.

Need help layering right? Check out our layering guide here.

Key Features

• 100% Fine Australian Merino Wool – 230gsm, 20.5 micron fibre for warmth and softness.
• Naturally Odour Resistant – Fights stink without synthetic treatments.
• Breathable & Thermo-Regulating – Stays warm when it’s cold, cool when it’s hot.
• Flatlock Seams & Raglan Sleeves – Prevent chafing and allow better mobility.
• Thumb Gussets – Keep sleeves locked in under layers.
• Non-Itch Comfort – Superfine Merino for all-day wear.
• UPF 50+ Sun Protection – Natural UV resistance.
• Carbon Neutral & Woolmark Certified – Sustainably produced and quality guaranteed.

About the Brand
XTM—short for “Cross The Mountain”—was founded in 1999 by Australian Olympic skier Pete Forras, alongside longtime snow industry figures Gary “X” Rae and Bill “The Uncle” Dalton. With roots in real-world mountain performance, XTM has grown into one of Australia’s leading snow gear brands, known for their technical reliability, ethical sourcing, and commitment to sustainability—including carbon neutral manufacturing and certified Merino wool.