Kepler Short Sleeve
$69.99
Kepler Men’s Short Sleeve – nature’s original technical base layer. Kepler is made from 100% pure merino wool — soft, breathable and built to perform, with zero synthetic fibres to get in the way. Just natural temperature regulation, pong-free freshness and all-day comfort, straight from the source.
Supernatural comfort. No-fuss performance.
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Pure merino wool – warm when it’s cool, cool when it’s warm
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Naturally odour-resistant – wear for days without washing
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Ultrafine fibres (17.2 microns) – soft on skin, never itchy
For early starts, long days and everything between
Kepler Short Sleeve is a go-to for hiking, running, bikepacking or everyday layering. The 160gsm fabric regulates heat across conditions — cool enough for summer efforts, warm enough for crisp morning starts. Its natural elasticity and low-profile seams make it ideal under a midlayer or pack, and the pure merino construction means it won’t hold odour even after heavy use.
Soft, breathable and itch-free, Kepler gives you reliable comfort without the bulk — and without the need to overpack or overwash.
Lower impact. Longer lasting. Naturally better.
Kepler is made from 100% non-mulesed merino wool, certified to the Responsible Wool Standard. It’s renewable, traceable, biodegradable — and backed by our 3-Year Alpine Bond. Wear more. Wash less. Go further.
Features
Key Features
- Breathable, wicking and temperature-regulating for all-day comfort
- Pure merino wool has a high warmth-to-weight ratio
- Naturally odour-resistant for wearing on multiple days without washing
- Ultrafine merino wool fibres are soft and fast-drying
- Anatomical cut and flatlock seams layer well and are comfy under straps
- 3 Year Alpine Bond
Vital stats
Fit
Slim
Construction
Fabric: 100% merino, 160 gsm, 17.2 microns
Seams: Flatlock stitching
Weight
S: 140g; M: 160g; L: 170g; XL:175g; XXL: 195g
Origin: China
Delivery is free over $99.
All duties and import charges are covered by Alpkit on products of UK origin. This includes the 10% universal import duty and
reciprocal tariffs, announced on the 11th April 2025. Customers who wish to proceed with a purchase can contact us directly via email at support@alpkit.com
to obtain a delivered price, inclusive of all applicable tariffs.
Men's Base Layer Sizing | ||||||
---|---|---|---|---|---|---|
UK | XS | S | M | L | XL | XXL |
Chest Inches CMs |
34" 88 |
37" 94 |
40" 102 |
43" 109 |
46" 117 |
49" 124 |
Waist Inches CMs |
28" 71 |
30" 76 |
32" 81 |
34" 86 |
36" 91 |
38" 97 |
Sleeve Inches CMs |
32" 81.5 |
33" 84 |
34" 86.5 |
35" 89 |
36" 91.5 |
36.5" 92.5 |
EU USA |
44 34 |
46 36 |
48 38 |
50 40 |
52 42 |
54 44 |

How to measure
This size chart indicates the body measurements our garments are designed to fit. Measure yourself as described below, and use the size chart to find your size:
Chest - measure around your chest at the widest part. The tape measure should pass under your arms, and be level from front to back.
Waist - measure around your waist at the narrowest part.
Sleeve - With your arms relaxed by your side, tilt your head down and ask a friend to measure from the bone at the base of your neck, over your shoulder and down your arm to the fold at your wrist.
Fit Guide

Tight
Close fitting designed to conform to your body.

Slim
Slim and slightly contoured but not form fitting.

Regular
A comfortable fit that's not too tight, nor too loose.

Relaxed
A looser fit with a bit more space but not too baggy.