The Klimatex JAKE windproof thermal T-shirt is engineered for ultimate protection and comfort during intense winter activities like running, cycling, and cross-country skiing. Stay warm and shielded from the elements while enjoying your favourite outdoor pursuits! Thanks to its lightweight material featuring a windproof membrane on the front, this T-shirt offers excellent protection against chilly winds while providing optimal thermal insulation. Stay warm and comfortable, no matter the conditions! The sleeves and back of the T-shirt feature a ribbed knit fabric that offers excellent flexibility and freedom of movement. Polyester ensures breathability and fast sweat wicking; Flat seams are designed to minimize the risk of skin irritation, providing a smooth fit that ensures maximum comfort throughout the day. The reflective elements increase your visibility. Goes great with the JEREMY thermal underpants.