Our site works best with JavaScript enabled.

Kepler Zip Top [Mens]pure merino base layer

Naturally thermal and anti-microbial merino long-sleeved base layer with ¼ length zip neck for warmth, freshness, and next-to-skin comfort in cooler climates

Kepler Zip Top [Mens] in Tarmac Grey

Kepler Zip Top [Mens] pure merino base layer

  • Google+



  • Tarmac - Kepler Zip Top [Mens] in Tarmac Grey
  • Nemo - Kepler Zip Top [Mens] in Nemo Blue
1. Colour / Size
Fitting guide

Please choose an option above

Alpine summer, Scottish winter, Autumn on the gritstone… You don’t want your base layer to be as seasonally limited as your outdoor activities.

A multi-day trip doesn’t have to leave you with a humungous pile of laundry. Thermoregulatory, anti-microbial, UV protective, and exquisitely soft, Kepler base layer keeps you comfortable and fresh on longer trips across a range of temperatures.

A high collar keeps your neck protected from draughts or the sun whilst the ¼ zip neck opening gives ventilation when needed. Thumb loops keep the full-length sleeves in place, ensuring your forearms stay well protected.

Flatlock seams and an anatomical cut enhance the natural next-to-skin comfort of merino. Kepler is designed to have a flattering fit that isn’t too ‘base layery’, so you’ll fit right in at the pub after a day on the hill.


The Kepler range uses beautiful, ultrafine merino for a luxuriously comfortable next-to-skin feel.

With thermoregulatory and anti-microbial properties, merino wool is more than a match for day-in, day-out use across the temperatures in changeable mountain conditions, help you to stay fresh, comfortable, and protected no matter what the weather decides.

We use 100% natural New Zealand merino from non-mulesing farms.

Merino baselayer won’t make you fitter, it won’t make you faster, but it will help you feel more comfortable when you find yourself in uncomfortable circumstances.

Key features
  • 3 Year Alpine Bond
  • Long-sleeved ultrafine merino base layer
  • Longer sleeves give added coverage and protection
  • High collar protects from the draughts and the sun
  • ¼ zip gives you room to breathe
  • 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
  • New Zealand merino from 100% non-museling farms
More images
Vital stats

Fabric: 100% New Zealand merino, 160 gsm, 17.2 microns
Seams: Flatlock stitching


Weight: S: 200 g; M: 215 g; L: 230 g XL: 245 g; XXL: 260 g
Zip length: 24 cm

Origin: China


Kinder’s Ramparts

Recapturing the adventure element of climbing



Turning a summer of adventure into something a bit more, errm, oddventurous


Mens sizing
Chest (inches) 37" 40" 43" 46" 49"
Waist (inches) 30" 32" 34" 36" 38"

These size charts show the body measurements that an Alpkit garment of a given size is designed to fit. They are not actual garment measurements. 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.


Related products

Kepler Long Sleeve [Womens]

pure merino long-sleeved base layer top


Kepler Boxers [Mens]

pure ultrafine merino boxers


Kepler Zip Top [Womens]

pure merino ¼ zip long-sleeved base layer top


Kepler Long John [Mens]

Pure ultrafine merino base layer leggings


Kepler Briefs [Mens]

ultrapure merino briefs


Kepler Briefs [Womens]

pure fine merino briefs for active use


Free UK Shipping on all orders

Free 2 day delivery to UK addresses is included in all orders so the price you see is the price you pay. Upgrade to next day at the checkout.

Free No hassle 123 Day Returns

Buy with confidence and if you are not happy, change your mind or want a swap for any reason then return it for free and we will exchange or refund no question. The price you see is the price you pay. Just return the kit as you receive it - in its original condition, unused, unworn, with original packaging and fit for resale.


We offer a range of finance options from 0% to 9.9% starting on orders over £500. Please give us a call on 01773 417007 to apply for finance. Our customer support heros will take your order and talk you through the quick and easy application process.

Alpine Bond

If one of our products does not meet your expectations upon delivery or, if it does not live up to the demands placed upon it, please return it within 3 years of purchase for repair, replacement or refund. If the problem is our fault then we will do this to your satisfaction if it’s your fault then we will help out the best we can.


4 Reviews


Used this product?

Write a review
Excellent baselayer

Very pleased with my Kepler Zip Top baselayer which I bought at Hathersage. It does exactly what is says in the description and is very good value.

Thomas O'Moore
Great top

Used this on wee bike tour wild camping last week on my Sonder Camino SRAM Ti. (Photos won't load) Fort William - Inverness on trail. Then across country to Skye via Plockton etc-Mallaig and back to Fort William.

I wore this top the whole time washing once. It's definately my Best Buy for a long time. Comfortable, easy on the skin and washes and dries easily. I'll have a spare soon 10/10


Just got back from a weekend trip with mixed weather conditions warm, very wet, cool, dry and the Kelper top served me well either under my waterproof jacket in downpours preventing that clammy feeling and keeping me warm in the evenings. Really appreciate the fact it’s not skin tight like a lot of other Merino wool garments; perfect for my needs as a mid layer.
As ever Alpkit standards with all kit and clothing is superb.

zip version

I have this and the non-zip l/s version (see my other review) - the zipped version looks a bit more 'technical' and sporty and thus gets a bit less use than its zipless sibling but is the same amazing quality. Nice high collar if you're concerned about drafts or sunburn.