If your truck cab mattress has an odd shape, or needs custom cut-outs to fit in your cab, follow the order process on our website, select “Pattern Shape,” and enter the (rough) dimensions of the mattress. At the end of the process we’ll tell you how to mail your pattern to us. To make the pattern, start with a large piece of paper, or plastic, and a Sharpie or other marker, to trace the exact shape you’ll need. Taping several pieces of paper together is fine. Next, trace the exact shape of the cab mattress, and write important details on the pattern like the thickness of the mattress, and where the zippers go if you’re going to order a mattress cover for your truck cab mattress. A custom pattern-shape cab mattress usually takes 2 weeks after we receive your pattern if it doesn’t include a sewn cover. If it does include a cover, it will likely take 4–6 weeks.