The endura fs260 pro sl knee warmer protecting your joints from the cold during the winter is crucial and the endura fs260 pro sl knee warmers are perfect for protecting your knees when the temperature starts to drop if it39s not quite cold enough the knee warmers are ideal as they are quick to put on and can simply be removed constructed from thermolite fabric with a high performance repel treatment these knee warmers provide both warmth and water repellence they are finished with