Best King Mattresses 2025

You probably already know that a king size mattress rocks in providing maximum personal sleeping surface. With a size of 76 inches in width and 80 inches in length, the best king size mattress offers that extra space that you need whether you sleep solo, as a couple, or with a child or pet. Before perusing the different options in our list of the best king size mattresses to buy, we’ve prepared a few pointers that might help you land on the perfect bed for your needs.

Essential Things to Consider When Shopping for a King Size Mattress

Material

You’ll find up to 5 types of king size beds in terms of construction material;

i) Memory foam- this material molds to your natural body shape by responding to your weight and body temperature. It’s a good pick for people suffering from back and joint pains as it’s perfect for relieving pressure.

ii) Cooling gel memory foam- these mattresses deliver all the benefits of traditional memory foam without sleeping hot.

iii) Latex- this is a highly breathable material that does not heat up at night. It’s naturally hypoallergenic too, so it’s a perfect choice for asthmatic patients and those with allergies.

iv) Open springs: also known as open coil mattresses, these are a go-to option when you’re looking for value. Note that they are less durable than mattress other types and will need to be replaced soon. That’s why they are most suited for kids’ bedrooms and guest beds.

v) Pocketed springs: these are a more luxurious version of the open springs. They feature small springs, each held in a separate fabric pocket for more comfort and support. The design of these mattresses prevents you from rolling towards your partner.

Choice of firmness

Your ideal firmness level will, to a large extent, depend on your weight and most preferred sleeping position. Soft mattresses are best suited for lightweight and side sleepers, while firm mattresses work best for heavy, stomach sleepers. It’s recommendable to err on the side of medium-firm mattresses if you change position regularly while sleeping.

Warranty

Whether you’re buying a king size mattress online or from a brick-and-mortar store, a warranty offers peace of mind that your purchase is free from flaws and defects. It’s an assurance that the mattress will function as expected. Please read the warranty keenly for a clear understanding of what it covers and what it doesn’t.