A BUFF ThermoNet® gives you ultimate warmth and is also made from recycled material. Thanks to the Primaloft yarns, the ThermoNet does not feel thick, but it is nice and warm. Equipped with ultra-stretch technology: 4-way stretch for the best fit and ultimate comfort. Thanks to the bonded seam construction, you won't be bothered by irritating seams. Wind resistant thanks to ThermoNet® technology, revolutionary technology developed by BUFF® and Primaloft.