Size guide
Size Guide
Our merino has a close, next-to-skin fit by design. If you are between sizes, stay true to size for base-layer use or size up for a more relaxed everyday fit. Free returns within 30 days, so ordering two sizes and sending one back is completely fine.
How to measure
Chest — around the fullest part of your chest, with the tape level under the arms.
Waist — around your natural waistline, with the tape comfortably loose.
Hips — around the fullest part of your hips and seat.
Inside leg — from the top of your inner thigh to your ankle bone.
Measure over light clothing, keeping the tape snug but not tight. Tap any chart below to open it full size.
Men's Base Layer Set
Need different sizes for the top and the bottoms? Build your own set →
Women's Base Layer Set
Need different sizes for the top and the bottoms? Build your own set →
Kids' Base Layer Set
Men's T-Shirt
Women's T-Shirt
Men's Long Sleeve
Same body measurements across 165, 190, 250 and 320gsm.
Women's Long Sleeve
Kids' Long Sleeve
Men's Long Johns
Women's Thermal Leggings
Kids' Thermal Leggings
Men's Half Zip
Women's Half Zip
Merino Wool Socks
Beanies, snoods and balaclavas
Still unsure which size to pick? Email info@merinotech.co.uk with your height, chest and waist and we will recommend a size. Free UK delivery over £49 and free returns within 30 days.
- Free shipping over $49.99
- 30-day easy returns
- Ships in 1–2 business days
Description
Men's Merino Boxers
Experience underwear that works as hard as you do. Men’s Merino Boxers adjust to your body and environment, offering the perfect temperature all day long. The advanced fibres draw moisture away, keeping you dry and irritation-free. Natural odor resistance ensures lasting freshness, while the soft, elastic feel makes every movement effortless. The UV protection and anti-static nature make them perfect for indoor or outdoor wear.
Sustainable, light, and durable — these boxers are built to last and feel incredible every time you wear them.
Composed of 81% Merino Wool, 12% Tencel, and 7% Nylon, it delivers exceptional thermoregulation, softness against the skin, and enhanced durability.
Care
Turn inside out. Machine wash cold on a gentle cycle with a wool-safe detergent. Do not bleach. Lay flat or hang to dry.
Shipping & returns
Free UK delivery on orders over £49. Ships in 1–2 business days. 30-day free returns on unworn items with tags.
Merino accessories
Warm, dry and stink-free
Merino where it matters most — socks, beanies, gaiters and underwear in a soft, durable blend. Breathable, naturally odour-resistant and comfortable for days on the trail.
Size guide
Men's Boxers
Fit
A close, supportive fit that is true to size. Between sizes? Size up for extra room.
How to measure
- Chest – around the fullest part of your chest, tape level under the arms.
- Waist – around your natural waistline, tape comfortably loose.
- Hips – around the fullest part of your hips and seat.
- Inside leg – from the top of your inner thigh to your ankle bone.
Measure over light clothing and keep the tape snug but not tight. Still unsure? Email info@merinotech.co.uk with your height, chest and waist and we will recommend a size. Unworn items can be returned free within 30 days.
THE FABRIC
Why merino wool
Merino wool moves sweat away from your skin as vapour and lets it evaporate from the fabric, so you stay dry and comfortable whether you are hiking, commuting or skiing.
Merino fibres naturally resist the bacteria that cause odour, so you can wear a base layer for several days, on the trail or while travelling, and it still smells fresh.
Wool can absorb up to 30% of its weight in moisture without feeling wet. In damp British weather it keeps insulating where cotton and polyester leave you cold.
Merino absorbs UV radiation: our lightweight layers offer UPF 25 and the midweight and heavyweight options UPF 50+, handy on long days in the hills.
Merino wool is naturally hard to ignite and self-extinguishes without melting onto the skin, unlike synthetic base layers.
Merino is a natural, renewable and biodegradable fibre. Sheep grow a new fleece every year, and a worn-out merino garment breaks down instead of shedding plastic microfibres.
FAQ
Merino socks, beanies & accessories: FAQ
What is this 170gsm boxers best for?
It is a lightweight 170gsm merino layer, best for all-day comfort, travel and sport. Compare every weight in our merino weight guide.
Are merino wool socks good for walking boots?
Yes. Merino hiking socks cushion your feet, wick sweat and keep insulating when damp, which helps reduce the moisture that leads to blisters on long days in boots.
Do merino socks keep feet warm in winter?
Yes. Merino traps warm air even when your feet sweat, so it keeps toes warmer than cotton socks in cold, wet conditions.
What size merino socks should I buy?
Choose your size from the size guide. If you are between two sizes, pick the larger size for boots and the smaller one for trainers.
What is a merino neck gaiter used for?
A neck gaiter (snood) can be worn as a neck warmer, face cover, headband or beanie, so it replaces several accessories for cycling, skiing, running and walking the dog on cold mornings.
How do I wash merino socks, beanies and boxers?
Turn them inside out and machine wash at 30°C on a wool or delicate cycle, then air-dry. Avoid tumble drying and fabric softener to keep them soft and in shape.