Men · 25 products

Men's Merino Thermal Tops

All tops165 Lightweight190 Light-Mid250 Midweight320 HeavyweightHalf-ZipsHoodies
Men's Merino Thermal Tops
25 products
Bundle & save 10%Build your own base layer setPick a weight, a top and a bottom. Mix colours freely.Start building
Showing 25 of 25

About this collection

RelatedWomen's Base LayersMerino Socks

Men's merino wool base layer tops

A merino long sleeve is the one layer you will reach for all year: on its own on a cool autumn walk, under a fleece on the fells or beneath a ski jacket in the Alps. Superfine Australian merino wool keeps you warm without overheating, moves sweat away from your skin and stays fresh for days.

Find your weight

Choose 165gsm lightweight for high-output sports and layering, 190gsm as a year-round all-rounder, 250gsm midweight for most winter days and 320gsm heavyweight for deep cold. Want to vent on the move? See our half-zip tops.

Complete the layer with merino long johns. Free UK delivery over £49 and 30-day returns.

FAQ

Men's Merino Thermal Tops FAQ

What is the best merino base layer top for hiking in the UK?

A 190 or 250gsm merino long sleeve covers most UK hillwalking: warm on exposed summits, breathable on the climb and still insulating in drizzle. Choose 165gsm for summer and fast-paced walks.

Should a merino base layer be tight?

It should sit close to the skin without restricting you, because it can only wick sweat when it touches you. Our tops are true to size; see the size guide.

How warm is a 250gsm merino top?

250gsm is a midweight fabric suited to roughly -5°C to 8°C when you are moving, or as the base of a layering system in colder weather. For standing still in the cold, 320gsm is warmer.

NEWSLETTER

Get 20% off your first order

Subscribe to the Merino.tech newsletter — new drops, promo codes and layering guides. No spam, unsubscribe anytime.