Advice & Guides Five of the best base layers
When it comes to staying warm, the first layer is key. Start here, with these…
19 Feb 2024
Rukka Outlast Shirt
Genuine Rukka mens temperature regulating long sleeved shirt
DetailsBest Seller
in Base Layers
Verified Customer Reviews for Rukka Outlast Shirt
Our customers say…
Customers find the Rukka Outlast base layer an exceptional multi-season garment, praised for regulating body temperature effectively in varying conditions. It fits comfortably, with many noting its snug yet non-restrictive fit, and the material's quality and softness against the skin. It's highly recommended for commuting, touring, and general motorcycling, with several customers buying multiple sets. Negative feedback included comments on size fitting issues and sleeve length. Overall, this base layer offers great comfort and effectiveness, justifying its cost.
AI-generated from the text of our verified customer reviews
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Just the job
30 Sep 2025 by Simon D
An excellent base layer for both warm and cooler days. I usually switch to HH merino wool when temperatures fall below 7°C, but with the right layering, this one still handles it with ease. It’s so good that this is the second one I bought and even wear them at work.
Highly recommended!
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Great base layer
29 Sep 2025 by Anonymous
Great fit, easy to wash/dry especially when traveling/touring
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Great summer undergarment.
21 Sep 2025 by Tim
Good to keep your body at a regulated temp.
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Great summer undergarment.
21 Sep 2025 by Tim
Not good for single digits weather but anything 10 degrees upwards is great once you get used to it.
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Helps to regulate temperature
26 Aug 2025 by Andrew
Sizing is accurate
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Superb!
26 Jul 2025 by David L
This is my go to base layer. super comfortable, helps keep me warm when it chilly and cooler when its warm. Seems to work well in all conditions so has made my other base layer tops redundant except for my zerofit for when its quite a bit chilly.
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Warm and comfortable
16 Jun 2025 by Magic*Rat
I was looking for something to wear as a base layer beneath my Rukka Air Karvik. As usual with Rukka I needed to go up one size as they're a bit slim-fitting, which I'm not.
This does the job well, and while I'm sure I could have used any old base layer from an outdoor shop, if you're a bit vain like me it's nice having your kit match!
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Comfortable
10 Jun 2025 by Anonymous
Great fitting and comfortable for wearing during those long rides and days out. Looks and feels good.
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Excellent Performance
02 Jun 2025 by Ray M
Quality product, good fit and extremely comfortable. Works well in the heat and cold.
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Not Convinced
27 May 2025 by Martin B
The shirt fits well and is comfortable.
I have not really noticed the heat storage and release properties claimed. A bit of a disappointment really.
As a consequence I use other base layers in preference- Under Armour and Helly Hansen are more suitable imo.
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A quality base layer and lovely fit
18 May 2025 by gavin
A perfect fit and feels very comfy.
It’s currently my go to top
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Fits perfect.
10 Apr 2025 by John G
Order as going to Belgium in June and wanted some base layer that would keep me cool when weather warm and warm when weather cold.
Iv used a few times in 6 deg and kept me warm. Not tried in plus 20 deg yet.
But the fit is lovely and material is soft don't even know you have it on.
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Excellent
15 Mar 2025 by Ray M
Really good fit, excellent quality and works really well at regulating your body temperature.
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Warm top
17 Feb 2025 by Alan S
Good layer warm and comfortable
a good buy in my opinion
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Great shirt
02 Jan 2025 by Nick R
Works really well.
Very comfortable.
Great quality.
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Brilliant shirt , does as advertised !
13 Oct 2024 by Ian B
Bought this base layer somewhat sceptically, as it was meant to keep you cool in the heat and warm when it gets cold. It really is comfortable and has been my go to shirt virtually every ride.
It really seems to work well, within certain tolerances.
I have bought another !!
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Oh, it actually works!
13 Oct 2024 by Gavin C
I wasn't expecting much from this, but whether the weather is good or bad it adjusts accordingly.
Really impressed. Honestly folks, buy this.
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Quality Base Layer
02 Aug 2024 by David B
Now used twice, once on a cool and wet ride and once on a hot and sticky day. On both occasions the garment did it's job in keeping me warm or cool. Really nice & comfortable to wear. Worth the cost over cheaper less effective garments.
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Press Reviews
Description
Product Specification
Related Items
Manufacturer
Rukka Outlast Shirt
- Outlast temperature regulation construction
- Keeps you cool when hot
- Keeps you hot when cool
Outlast Temperature Regulation stores and releases body heat. It works to keep the wearer's temperature not too hot... not too cold... but just right, over a broad range of environments and activity levels. When your activity level or the outside temperature increase, the Outlast thermocules that contain the phase change paraffin begin to change from a solid to a liquid which provides you with a comfortable sensation of thermal equilibrium. The energy required to activate this process comes from your warm body or the rising ambient temperature. When you begin to cool down, Outlast thermocules begin to change back from a liquid to solid. In this phase change, the energy that was absorbed by the thermocules while you were active is returned to you.
Questions and Answers
Hi, which country are these manufactured in please? Thanks.
October 30, 2024We can confirm that this garment is currently manufactured in Latvia.
Do you have to wear this on bare skin or can you wear a t-shirt under it for it to work.
December 20, 2017This is a base layer, and so any other layers should be worn over the Outlast shirt.
What size to fit 46-48 chest?
February 9, 2017A size 46 would be an XL and a 48 is listed as a 2XL
I'm a 42inch chest so is that S M L XL etc ? Thank you
February 8, 2017We would recommend the medium shirt for your chest size.
Advice & inspiration
Advice & Guides 
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