Free Express Delivery On All Products. No Hidden Charges On Any Products.
Your Cart is Empty
Tax included and shipping calculated at checkout
I Agree with the Terms & Conditions [View Terms]
Looking for a king size mattress that combines comfort, space, and great value? At 150cm x 200cm (5ft wide), a king size mattress is perfect for couples or anyone who wants more room to stretch out. It’s also a great choice for taller sleepers and medium to large bedrooms.
Our king size mattress collection starts at just €349, with options ranging from orthopaedic to luxury pocket spring models, all with free delivery across Ireland.
We also offer 0% finance to make your perfect night’s sleep even more affordable.
Prefer a different size? Explore our single mattresses, double mattresses, or super king size mattresses. You can also return to our full mattress collection to browse all styles and sizes.
These are some of the most common questions our customers ask when shopping for a king size mattress from DFI.
A standard king size mattress measures 150cm wide by 200cm long (5ft x 6ft 6in), offering ample space for couples or anyone who prefers more sleeping room.
King size mattresses are designed to fit standard Irish king size bed bases. Be sure to check the measurements of your bed frame to ensure compatibility.
FI king size mattresses are delivered flat to maintain structural integrity.
Only specific models are compatible with adjustable bases. Please check the product description or ask our team if you’re considering a king size mattress for an adjustable bed.
We offer king size mattresses in a variety of types including orthopedic, pocket-sprung, hybrid, and memory foam. Each is designed to suit different sleep preferences and support needs.
Yes. All king size mattresses include a manufacturer’s warranty. Warranty details are listed on each product page.
Yes, all DFI king size mattresses come with free delivery across Ireland. We also offer optional old mattress removal for an added fee.
Guaranteed Delivery slot within 7 - 10 working days
Made in our own Irish factory
Over 2500 5 Star Reviews