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MicroTherm™
OUTDOOR TRAINING LONGSLEEVE
$149.00
Natural Performance
An innovative blend of 75% TENCEL™ Lyocell and 25% Merino Wool. Lightweight, breathable, built for outdoor training when the temperature drops.
Microplastic-Free
The wool is 'non-superwashed': it hasn't been treated with the chlorine-Hercosett resin process that causes most wool today to shed microplastics. TENCEL™ Lyocell is the highest grade Lyocell, made by Lenzing. No plastic, no petroleum-derived materials.
Thermoregulating
Merino wool is like magic. When you're hot, it cools you down. When you're cold, it warms you up. The TENCEL™ Lyocell handles the sweat, pulling moisture away so you stay dry.
No Toxic Chemicals
This fabric is OEKO-TEX certified — tested for PFAS, forever chemicals, toxic dyes and more. It has nothing you wouldn't want sitting against your skin.
Odour Resistant
Merino wool is naturally antibacterial — it prevents odours from building up without any chemical treatments. You can wear it multiple times before washing.
Thumb Holes
Sleeves long enough to actually cover your wrists, with reinforced thumb holes. Small detail, big difference when it's cold and you forgot your gloves.
Performance fit. Model is 6'1" (185cm) and wears size M.
Temperature range
Intensity
A blend engineered for cold weather training. 75% TENCEL™ Lyocell and 25% non-superwashed Merino Wool. Lightweight, breathable, made for when the temperature drops.
Why Lyocell
Made from sustainably grown eucalyptus pulp through a closed loop process. 99% of the solvents used are recovered and reused. Softer than cotton, more breathable than synthetics, fully biodegradable at end of life.
Why non-superwashed Merino
Most Merino wool today is superwashed and coated in plastic resin to prevent shrinking. Our Merino is non-superwashed. No toxic plastic coating against your skin.
Engineered blend
The Lyocell handles moisture wicking and softness. The Merino handles thermoregulation and odour resistance. Together they perform better than either fiber alone, and better than any synthetic alternative.
We believe in full transparency about what goes into our garments. Here is everything that makes up this piece.
| Fabric | VELM MicroTherm™: 75% TENCEL™ Lyocell by Lenzing, 25% non-superwashed Merino Wool. Top grade Lyocell, produced in a closed loop with no petroleum derived inputs. Non-superwashed Merino, no toxic plastic coating against your skin. |
| Thread | High tenacity polyester. This is the one place we use a synthetic. We tested natural alternatives through development. None passed our tests for stretch and longevity. Thread is what holds the garment together over years, and polyester is the strongest. |
Designed in Switzerland
Made in China
Built for intense effort in cool and cold conditions. Spring, autumn, winter training, outdoor workouts, early starts. Designed to keep you warm without overheating.
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Unrestricted shoulders
Your arms move freely. Reach, rotate, lift overhead. Nothing pulls.
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No chafing
Seams sit flat against your skin. Nothing rubs, however hard you go.
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Extended sleeves
When the cold bites, pull them over your hands. Instant warmth, no gloves needed.
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Printed labels
Nothing scratching your neck or your stomach while you train. The label is printed directly inside the garment.
Composition
75% TENCEL™ Lyocell, 25% Merino Wool
Cold wash protects the Merino and stops the Lyocell shrinking. It also doubles the garment's life. Worth the habit.
Shipping
We ship globally. Orders usually dispatch the next working day and arrive within 7 to 9 days. Every order is tracked.
Returns
Your satisfaction is our #1 priority. If you're not 100% happy with your order, shoot us a message at crew@velm.co and we'll sort you out.
Support
Need help with sizing, fabric, fit, or anything else? We're a small team and we respond personally. Write to crew@velm.co.