The Willow toilet seat elongated slow close is simply elegant. The sleek, organic lines of this plastic elongated toilet seat catch your eye and add visual interest without being austere. And for that reason, the Willow toilet seat lends itself perfectly to modern bathroom decor where less is more. Manufactured from thermoset plastic—a premium material known for its uncompromising strength and scratch-resistance compared to conventional plastic—these KOHLER toilet seats are more durable and more streamlined than a conventional toilet seat. The elongated toilet seats are geometrically shaped to hide the hinge, adding even more to its uncluttered, contemporary silhouette. These KOHLER soft close elongated toilet seats are recommended for use on K-1381 and K-28161 Veil® toilets, K-5172 San Souci® toilet, K-75790 Persuade® toilet, and K-78080 Reach® toilet.