Elevate your sleep experience with the best Twin XL mattress from Costco, the premier choice for college dorms, guest rooms, and split-king setups. Offering five extra inches of length compared to a standard twin, the Twin XL bed is the best for tall sleepers and growing teens who need extra legroom without a wider footprint. Our selection features high-performance options, including the best memory foam Twin XL mattress for contouring pressure relief and the Twin XL hybrid mattress for a perfect balance of innerspring support and gel memory foam comfort. Many of our models are adjustable base compatible and include advanced cooling technology to ensure a breathable, refreshing night's rest. Discover an affordable Twin XL mattress that delivers the luxury and durability you expect, making it easier than ever to maximize comfort in compact spaces. To provide the perfect foundation for your new mattress, Costco also offers a variety of durable Twin XL bed frames designed to provide sturdy, long-lasting support.

• Extra Length: Offers an 80-inch length, making it ideal for taller people.
• Split-King Ready: Adjustable base compatible for a customized king-size experience.

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