Kingsley-Bate cushion boxes are available in 53" and 60" widths. Theses boxes are silicon sealed, while the bottoms are slatted so cushions stay dry, or dry out if necessary. For safety purposes, the hydraulic arm keeps the top from slamming when closing. Both boxes can be used as a toy chest, or even as a serving table when the top is down. The 53" box can also be used as a bench.
The interior dimensions are:
CB53: 53" Storage Box - 49"W x 23.25"D x 20.5"H CB60: 60" Storage Box - 54"W x 27.5"D x 23.5"H