Think of base layer and the name Under Armour immediately springs to mind.
Under Armour was formed by an American footballer wanting to wear something better than a cotton t-shirt under his kit.
Coldgear compression for cold conditions and Heatgear compression for warm conditions were invented and the rest as they say “is history”. Pure compression garments were the natural extension from there, offering maximum compression to optimise recovery after the toughest sessions.
Amongst the finest technical sports clothing products on the planet, you will never be disappointed in an Under Armour base layer.