Need A Spa Cover Right Away? These Covers Ship In 4 Days. Choose below either a 4"x2" or 5"x3" thick, then choose the variation - in order by size and your choice of charcoal or walnut color. Save time by selecting from our list of stock covers. They cannot be modified from the specifications listed. Questions? Call Us Toll Free 844-382-6837 and we'll be happy to assist you with your order.