angulus thermal boot oliven100% PVC free winter thermal boots with wool lining and good support and comfort. The lower part of the boot is a strong rubber boot, while the polyester shaft makes the boot soft and flexible. Non slip rubber track sole. It is recommended that the boot is only used when the temperature drops below approx. 7 degrees, as the feet can otherwise become very hot and release moisture sweat which makes the boot wet inside. Should the boot get wet inside, it