The Maya Lin Stone Stool, often referred to as Knoll Stones, is a versatile, sculptural seat or side table designed by architect and artist Maya Lin in 1998 to celebrate Knoll's 60th anniversary. I purchased this stone directly from Knoll and have been the only owner. This is a very unique, first year of production stone for versatile use indoors as a sturdy seat with a pillow or table - or outdoor for patio or yard decor. Signed and dated as seen in the pictures. Dimensions 15" H x 27" W x 19" D