I can't believe I'm even asking this but as I comfortably slip into middle age, I'm in need of some insulation for in the office - which is always overly cold for my liking. I'm thinking of a v neck technical t shirt / baselayer in white / pale grey so I can wear it under a normal long sleeve shirt with no tie (without looking like an american ie. white t shirt visible under an open collar!).
Definitely not comfortable enough with my middle-age-ness to be buying a multi-pack of M&S cotton vests - so what the heck else is there out there??
A multi pack of cotton m&s vests?
A cardigan
Id go a cardigan, Uniqlo sweater (V- or round-neck) or a v-neck t-shirt. Grey, never white t-shirt especially if youre wearing a white shirts. Grey matches your skin tone more so wont show through the white shirt
Uniqlo heat tech v neck. Brilliant things.
Remarkable warmth to weight and really comfortable to wear under a shirt.
Don't go full headband but braces are back in.

More cake, the insulation will build up in no time 🙂
I think that's the issue - I share the office with a few cake eaters who don't seem to feel the cold and I'm proper nesh!!
https://www.planetx.co.uk/i/q/CLPX365PEFITVEST/planet-x-pro-365x-sleeveless-base-layer
Very decent for a fiver, though you may want a more subtle colour than my neon orange one for an office environment. 😉
Seriously, M&S vests are very awesome and not to be underrated, don't worry what others think:
a) They keep you snug in winter
b) You can top up deodorant without taking them off
c) They also somehow have a magic cooling effect when it gets warm - note that vests are also worn on hot countrys
d) The most important - if theres ever a terrorist attack at work you have instant Bruce Willis on your person.
I'm wearing one now, and have been since the age of 42 (not the same one, obvs.)
2nded uniqlo heat tech. They do a v neck for undershirt happiness.
