Abstract: An air flow guide for a garment sleeve is formed from an elongated, flat strip of flexible, semi-stiff material adapted to be rolled into an adjustable diameter tube and inserted into a garment sleeve adjacent a cuff portion thereof. Hook and eye type fastening means are provided on the strip of material for detachably securing the strip in the desired diameter tubular configuration. A strap may be detachably connected to the tube for securing the tube to the forearm of a wearer to properly position the tube to direct a flow of air into the garment through the garment sleeve.