Base Layer Trousers, Material: Elastane/Lycra/Spandex, Polyamide
From Amazon
FALKE Men's Maximum Warm Long M TI Functional Yarn Quick Dry 1 Piece Base Layer Bottom, Black (Black 3000), S
Selfridges
Falke Ergonomic Sport System Womens Black Brand-print Tapered-leg Fitted Stretch-woven Leggings XS