Introducing the Klimatex CALUM functional undergarment set tailored for winter sports enthusiasts. This set is comprised of a functional long-sleeved T-shirt and trousers. The garments are meticulously crafted with flat seams to eliminate any potential skin irritation. The inclusion of elastane ensures optimal freedom of movement, while the soft-touch fabric, resembling natural materials, ensures a comfortable and irritation-free experience. The inner side of the material is brushed, enhancing thermal insulation for added warmth.