Grey. Relieves the pressure on the back of the skull. Supports baby’s neck and keeps it aligned. Can be used in a bouncer seat, swing, stroller, on a playmat. Soft and lightweight. Washing machine safe. Ages 0+. Dimensions (inches): 9.3 x 8.5 x 1.3. The Pilö is not a just regular pillow! It’s designed to relieve the pressure on the back of baby’s head, helping keep it nice and round.