The Hee Lounge Chair Seat Cushion is a seat cushion from HAY designed specifically for the Hee Lounge Chair. The seat cushion is available in two colors, Anthracite, and Sky Gray, and is designed for outdoor use. The Hee Dining Chair Seat Cushion is made from Olefin which is a synthetic fiber that is quick-drying with a Teflon treatment, making it well suited for outdoor use.

Danish designer Hee Welling founded his own studio in Copenhagen in 2003. His designs are recognized by their relaxed elegance and sense of proportion. His focus is on the idea of creating technical products that can reach a wide mass. Welling has won several design awards including the Bo Bedre Award in Denmark and the Good Design Award in the United States. He has also been nominated for Danish Designer of the Year in both 2013 and 2014.