I bought a couple of these Zerofit base layers at the bike show last week: https://zerofit.co.uk/collections/range/products/heatrub-ultimate-baselayer
I have to say they are truly excellent pieces of kit and are toasty warm.
I wore mine on the bike yesterday in temps of around 3c and wore it again today on a 6 mile hike in temps down to freezing and I stayed comfortably warm on both occasions.
I also bought one for Claire as she works from home a couple of days a week and refuses to put the heating on and she said it made a huge difference in keeping her warm and comfortable.
Highly recommended.
I have to say they are truly excellent pieces of kit and are toasty warm.
I wore mine on the bike yesterday in temps of around 3c and wore it again today on a 6 mile hike in temps down to freezing and I stayed comfortably warm on both occasions.
I also bought one for Claire as she works from home a couple of days a week and refuses to put the heating on and she said it made a huge difference in keeping her warm and comfortable.
Highly recommended.