Rothco Polar Fleece Neck Warmer 592 Olive Drab. The neck warmer is constructed of a durable yet lightweight and breathable fleece material. The fleece balaclava adjusts to cover the neck Mouth and ears. Specifications for Rothco Polar Fleece Neck Warmer 592: Manufacturer: Rothco Color: Olive Drab Fabric/Material: 100percent Polyester Fleece Polyester Fleece Internal Dimensions: 11x15 in External Dimensions: 11x15 in Dimensions: 11x15 in Rothco Polar Fleece Neck Warmer