Costco Wholesale is home to optimum quality mattresses which will enhance your luxuriousness and comfort when you lay on the bed. With a huge range of choices in sizes like queen, king, twin, double, etc and brands including NexaGel, NovaFoam, Sealy, Serta, Signature Sleep and so on, you can avail a mattress that will perfect fit your bed size. You will find their stores throughout Canada including Grand Prairie.