Men's Base Layer Sizing
UK S M L XL XXL
Chest
Inches
CMs

37"
94

40"
102

43"
109

46"
117

49"
124
Waist
Inches
CMs

30"
76

32"
81

34"
86

36"
91

38"
97
Sleeve
Inches
CMs

33"
84

34"
86.5

35"
89

36"
91.5

36.5"
92.5
EU
USA
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.

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 Slim Regular Relaxed
Close fitting designed to conform to your body shape. Slim and slightly contoured but not form fitting. A comfortable fit that's not too tight, nor too loose. A looser fit with a bit more space but not too baggy.
Fit Guide
Tight Slim
Close fitting designed to conform to your body shape. Slim and slightly contoured but not form fitting.
Regular Relaxed
A comfortable fit that's not too tight, nor too loose. A looser fit with a bit more space but not too baggy.

Standard delivery to UK addresses is free over £29.


Next Day deliveries will be shipped same day if you place your order before 2pm Monday - Friday.


If you are not happy or have changed your mind you can return your unused product within 123 days of placing the order for a refund. Simply return it to us, free of charge, with all the original packaging.

Description

Our Koulin base layers are designed to keep you comfortable for everything from a long day hillwalking to short, sharp runs from your own front door.

  • Wicking and fast-drying 100% recycled polyester fabric
  • Polygiene® anti-odour technology for multiple wears
  • Body-mapped mesh panels dump heat and moisture

The only thing worse than becoming a sweaty mess is staying a sweaty mess and turning into into a shivery mess. The Koulin’s 100% recycled polyester fabric wicks moisture away from your skin and dries quickly to keep you a comfortable temperature on the move.

Body-mapped mesh panels under the arms provide extra breathability for steep summit slogs and sun-baked trail runs, dumping excess heat and moisture when you’re working hard.

The fit is relaxed enough to wear comfortably on its own, but slim enough to layer neatly under a fleece or mid layer. We’ve used low profile flatlock seams that are comfortable next to the skin and don’t dig in under rucksack straps.

Finally, Polygiene® Stay Fresh technology allows you to wear your tee for longer without washing – ideal for multi-day backpacks, travelling or just saving water!

Features

Key Features

  • Moisture wicking and fast-drying material keeps you comfortable
  • Polygiene® Stay Fresh technology to wear more and wash less
  • Body-mapped mesh underarm panels dump excess heat and moisture
  • Rear stash pocket with an attachment loop to keep your keys safe
  • Flat-lock seams for next-to-skin comfort and wearing under packs
  • Long sleeves provide extra coverage in cooler weather
  • 3 Year Alpine Bond

Vital stats

Fit

Slim

Construction

Main fabric: 100% recycled polyester, 150gsm
Mesh fabric: 100% recycled polyester, 100gsm
Polygiene® Stay Fresh Technology

Weight

Origin: China

Sustainability and Product Care

Product Care Information

The Koulin Trail Long Sleeve has been treated with Polygiene® Stay Fresh technology, meaning you can wear it for longer before it starts to whiff.

When your tee does start to pong, wash it at 40°C. Don’t use fabric softeners or conditioners though – these stop your tee from wicking as well.

Repairs
We have dedicated Repair Stations in our stores and we're fully equipped to breathe new life into your old kit. This includes spare parts, patches, new zips and wash and reproofing of your down and waterproofs. Pop into any store or contact us online for more info.

Alpine Bond
If one of our products does not meet your expectations upon delivery, or if during its lifetime does not live up to the demands placed upon it, please return it to us 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. Find out more about our Alpine Bond here.

Sustainability

How It Is Made

Recycled Polyester
The Koulin Trail Long Sleeve is made from 100% recycled polyester. This fabric is made using post-consumer recycled content which means it may have started life as a plastic bottle!

Polygiene® Stay Fresh
Polygiene® Stay Fresh technology inhibits the growth of pong-causing bacteria, extending your tee’s lifespan and meaning you can wear it more and wash it less. Wearing your tee just one more time before washing can save huge amounts of CO₂ and water over its lifespan.

Where It Is Made
Our products are made in the best factories in the world. We know the factories personally and they have all signed up to our Code of Ethics in our supply chain. This includes the Ethical Trading Initiative base code, fair pay, safe working environments, no child labour, no modern slavery, no bribery or corruption, no materials from conflict zones and humane farming methods.

All our factories sign up to our Code of Conduct. Find out where we make our product by visiting our Factories of Alpkit factory zone.

Reducing our carbon footprint
We are carbon neutral under PAS2060 and offset our Scope 1, Scope 2 and Scope 3 operations and transport emissions. We recognise that offsetting is not part of the solution but a point to pass through on a journey to Net Zero. Carbon Neutral is just a step in that journey.

We have joined the Science Based Targets Initiative which sets independent targets for us to achieve to do our bit to limit global warming to 1.5°C. Our targets are to halve our Scope 1 and Scope 2 emissions by 2025 based on 2018 base year and reduce our total carbon intesnity by 15% every year to achieve genuine net zero by 2050.

End of life
When your partnership with this product is over send it back to us and we will pass it on to someone that needs it through our Continuum Project.