The FRAM1 men’s functional undergarment set is designed for winter sports. The T-shirt with long sleeves and underpants are sewn with flat seams eliminating skin irritation during wear. The set has sleeve, neck and leg cuffs. The T-shirt has an extended back part. The material does not contain elastane, elasticity is achieved by a rib structure. Soft to the touch, feels similar to natural fabrics, doesn’t irritate the skin. The inner side of the material is slightly brushed and thus ensures better thermal insulation.