John Lewis Long Sleeve Heat Generating Thermal Top, Grey at John Lewis & Partners

These thermal tops will keep you 'warm and cosy' - and they're just £12 for a two-pack

John Lewis Long Sleeve Heat Generating Thermal Top, Ivory at John Lewis & Partners

Best base layers for running UK 2024

JOHN LEWIS Thermal Long Sleeve Top, Pack Of 2 in White

John Lewis Micro Warmth Long Sleeve Thermal Top, Grey at John Lewis & Partners

John Lewis Long Sleeve Heat Generating Thermal Top, Black at John Lewis & Partners

These thermal tops will keep you 'warm and cosy' - and they're just £12 for a two-pack

M&S' 'soft and cosy' £16 thermal top hailed as a 'go-to for autumn and winter' - Daily Record

John Lewis Heat Generating Ribbed Thermal Leggings, Grey at John Lewis & Partners

Campri Womens Thermal Top Baselayer Compression Armor Skins Long Sleeve Crew

Women's Merino 175 Everyday Long Sleeve Half Zip Thermal Top

XTM Bulgaria Womens Plus Size Merino Wool Top Burgundy

Warm Essentials by Cuddl Duds Women's Active Thermal Crewneck Top - Black L

Beat the freeze! shoppers are racing to buy this £14.99 thermal top that will keep you 'fantastically warm' during the cold snap