Nike KO 2.0 Fleece Pants - Boys' Grade School The Nike KO 2.0 Fleece Pant offers insulation and minimal distractions. Therma-FIT® double-brushed fleece fabric provides insulation from cold and wind, resists heat loss, and is ideal for cold weather activities. Elastic waistband allows for easy on and off. Swoosh design trademark on the front left leg. 222g 100% Therma-FIT® polyester fleece. Imported.