Article of thermal clothing for covering the underlying area at the gap between a coat sleeve and a glove

An article of thermal clothing for covering an underlying area at a gap between a coat sleeve and a glove. The article of clothing includes a tube having a distal portion terminating in a distal end, a proximal portion terminating in a proximal end, and a side opening formed in the distal portion adjacent to but spaced from the distal end. The tube is sized to snugly fit over a wearer's hand and forearm so that the distal end of the tube is positioned near a midpalm area of the hand. The proximal end of the tube is positioned at the forearm area, and the wearer's thumb extends out through the tube's side opening. The tube is formed out of a flexible, stretchable material providing good thermal insulation. A pocket is fixed to the tube and is adapted to receive and retain a warming device.