Get 40% Discount On Sydney Daybed Trundle Option At Jcpenney. Charming and functional, the Sydney Daybed is an easy way to multi-purpose a spare bedroom as both a home office and guestroom. The understated cottage charm with classic bead board detailing. It has arched back silhouette and the Sydney trundle is also available. The Sydney Daybed fits a standard twin mattress. It measures 84½ x 42½ x 40½".