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Kepler Long Sleeve
$74.99 $84.99
Kepler Women’s Long Sleeve – nature’s original technical base layer. Kepler is made from 100% pure merino wool — soft, breathable, and built to perform across seasons. No blends, no synthetics. Just nature doing what it does best.
Supernatural comfort, all-day performance
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Pure merino wool – breathable, insulating, and pong-free
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Ultrafine fibres (17.2 microns) – soft next to skin, never itchy
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Long sleeves offer warmth, sun protection and easy layering
Reliable warmth with natural stretch and softness
Kepler is your go-to for cool starts, breezy ridgelines, and long, layered days outdoors. The 160gsm fabric regulates your temperature across conditions — keeping you warm under a fleece and cool when the pace picks up. Merino’s natural stretch and breathability help you move freely and stay dry, while flatlock seams and a clean silhouette make it easy to wear under a shell, pack or harness.
Thanks to merino’s natural anti-microbial properties, Kepler stays pong-free for days — ideal for multi-day hikes, low-wash living, and fast-moving trips where every gram and wash counts.
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 and biodegradable — built to go further with less impact. Backed by our 3-Year Alpine Bond and tested through years of movement, weather and wear.
Features
Key Features
- Long-sleeved ultrafine merino base layer
- Longer sleeves give added coverage and protection
- Thumb loops keep sleeves in place
- Ultrafine merino for softness and comfort
- Anatomical cut and flatlock seams feel great next to the skin
- Merino wool minimises odours
- High warmth-to-weight ratio
- Pure merino from 100% non-museling farms
- 3 Year Alpine Bond
Vital stats
Fit
Slim
Construction
Fabric: 100% pure merino, 160 gsm, 17.5 microns
Seams: Flatlock stitching
Weight
8: 144 g; 10: 152 g; 12: 161 g; 14: 177 g; 16: 186 g
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.
Women's Base Layer Sizing | ||||||||
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UK | 6 | 8 | 10 | 12 | 14 | 16 | 18 | 20 |
Chest Inches CMs |
30" 76 |
32" 81 |
34" 86 |
36" 91 |
38" 97 |
40" 102 |
42" 107 |
44" 112 |
Waist Inches CMs |
24" 59
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25.5" 65 |
27" 69 |
29" 74 |
31" 79 |
33" 84 |
35" 89 |
37" 94 |
Hips Inches CMs |
33" 84 |
35" 89 |
37" 94 |
39" 99 |
41" 104 |
43" 109 |
45" 114 |
47" 119 |
Sleeve Inches CMs |
28" 71.5 |
28.5" 72.5 |
29" 73.5 |
30" 76 |
30.5" 77.5 |
31.5" 80 |
32" 81.5 |
33" 84 |
EU USA |
34 2 |
36 4 |
38 6 |
40 8 |
42 10 |
44 12 |
46 14 |
48 16 |

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.
Hips - Standing with your feet together, measure around your hips at the widest 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 shape.

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.