As above, winter is coming and we all need good thermals. And let's face it, full length underwear is rather fetching in any season! Seriously though for 4 quid can't go wrong and they're actually decent quality worth nabbing a pair or 2. Got a pair from there last year they look identical
https://www.aldi.co.uk/en/specialbuys/sun-8-nov/product-detail/ps/p/thermal-underwear-2/
https://www.aldi.co.uk/en/specialbuys/sun-8-nov/product-detail/ps/p/thermal-underwear-2/