The Compressport WINTER TRAIL POSTURAL LS TOP W has long sleeves and perfect thermoregulatory properties based on the scientific BODY MAPPING of the human body. The COMPRESSPORT development team spent many hours in the lab focusing on BODY MAPPING. The result is a perfect overview of the thermoregulatory properties of the human body. This research later led to the development of this unique winter running collection. Some parts of the human body get cold faster, before they warm-up. Soft merino wool is placed in these areas on the skin side and polyamide fibres on the outside. In parts of the body where it is the other way around and where increased thermal regulation is required, this layering of material is reversed.