Energex™ foam is a breakthrough technology designed to bridge the gap between memory foam and latex. While traditional memory foam provides excellent pressure relief, it can feel slow to respond and trap heat. Energex™ is temperature-responsive, so it adapts to your body for incredible pressure relief but has a lively, energetic feel—what we call "visco with a bounce." This means you get all the contouring benefits without feeling "stuck" in the mattress, making it easier to change positions.

Yes! Unlike bed-in-a-box brands that can take 10–12 days, Mattress King offers in-stock models with fast 1-day delivery and optional old mattress haul-away.

Yes, at Mattress King, we provide convenient delivery services across Oklahoma. We pride ourselves on offering fast, one-day delivery options. For those who opt for our upgraded delivery service, priced at $99, we not only deliver but also set up your new mattress and haul away your old one. In addition to this, we offer a free delivery option that includes doorstep drop-off, similar to services provided by FedEx and Amazon. For a comprehensive understanding of our delivery services, please visit our delivery information page here.

Choosing the right size is a key part of finding the perfect mattress. Here are the standard mattress dimensions to help you measure your space and decide which size is best for you. This mattress is available in most of the sizes listed below.

• Twin: 38" x 75" — Ideal for children, bunk beds, and single sleepers in smaller rooms.
• Twin XL: 38" x 80" — A great choice for taller teenagers or for use in college dorms. Two Twin XLs also form a Split King.
• Full: 54" x 75" — Offers more width for solo sleepers and is a popular choice for guest rooms.
• Queen: 60" x 80" — The most popular mattress size, providing comfortable space for couples or a luxurious amount of room for an individual.
• King: 76" x 80" — The widest standard size, perfect for couples who want maximum personal sleeping space
• California King: 72" x 84" — Offers extra length for taller individuals, though it is slightly narrower than a standard King.