Abstract: An arm support device is provided for use in supporting a person's arms while engaged in an activity such as typing at a keyboard or feeding an infant. The arm support device includes a cushion surrounded by fabric and is divided into a front portion and two side portions extending generally perpendicular to the front portion to form a U-shaped cushion. In use, the U-shaped cushion fits around a person's abdomen with the front portion lying on a person's lap. The side and front portions can support the person's arms when engaged in a stress producing activity. The cushion relieves stress that would otherwise build up within a person's arms and wrists. The device also includes means for vertically adjusting the device for different applications or different sized people. The adjustment feature uses separate smaller cushions that may be inserted into pockets sewn beneath the front and side portions to give the overall cushion a greater height.