Endura have utilised a knit fabric with additional windproof and breathable panels on the front of the legs and shin to cut out the biting cold wind so that you can maintain more warmth on even the coldest winter ridesteflon ht treated thermolite is used as its insulation properties are brilliant for its weight meaning that theyll keep plenty of warmth in but are not heavy or bulky so your range of movement is not compromised at all the ergonomic panelling ensures that theyre perfect for