King size Mattresses

Shop king size mattresses at Winksleep for spacious comfort, supportive designs and high quality materials. Enjoy reliable comfort and fast delivery across the UK.

2'6 Small Single Mattresses

20 items

3'0 Single Mattresses

65 items

4'0 Small Double Mattresses

61 items

4'6 Double Mattresses

64 items

5'0 King Mattresses

1 item

We offer a wide range of king size mattresses designed to give you extra space and long lasting comfort. Our collection includes supportive pocket sprung options, pressure relieving memory foam choices and hybrid designs that combine both for a balanced feel. Whatever your preferred sleeping style, we have a mattress that can match your needs.

We know that a king size mattress is more than just a larger bed. It gives you room to stretch out, sleep peacefully with a partner and enjoy a more relaxed and comfortable night. The added space helps reduce disturbances and supports better posture, so you wake up feeling refreshed.

We focus on quality, durability and comfort in every mattress we stock. Many models include breathable materials and soft yet supportive layers to help maintain a comfortable sleep temperature. With fast UK delivery and trusted craftsmanship, our king size mattresses offer a simple way to upgrade your sleep.

Frequently Asked Questions

What size mattresses are available at WinkSleep?

We offer them in a variety of sizes to accommodate different bed frames and sleeping preferences. The available sizes typically include: Twin: Ideal for children's rooms, guest rooms, or small bedrooms where space is limited. The Twins measure approximately 38 inches wide and 75 inches long. Twin XL: Slightly longer than a standard twin mattress, twin XL are commonly used in college dormitories and for taller individuals. They measure approximately 38 inches wide and 80 inches long. Full/Double: Also known as double mattresses, provide more width than a twin mattress, making them suitable for single sleepers who prefer an extra room or for couples who like to snuggle. They measure approximately 54 inches wide and 75 inches long. Queen: Queen is one of the most popular mattress sizes, offering ample space for single sleepers or couples without taking up too much room in the bedroom. They measure approximately 60 inches wide and 80 inches long. King: King provides the most sleeping space, making them ideal for couples who want plenty of room to spread out or share with pets or children. They measure approximately 76 inches wide and 80 inches long. California King: California king mattresses are longer and narrower than standard king mattresses, making them suitable for taller individuals or those who prefer extra length. They measure approximately 72 inches wide and 84 inches long.

How do I choose the right mattress firmness?

Here are some factors to consider when determining the ideal firmness level for your mattress: Sleeping Position: Your preferred sleeping position can influence the ideal firmness level of your mattress. Body Weight: Your body weight can affect how much pressure you exert on the mattress and how deeply you sink into it. Personal Preference: Ultimately, the firmness level of your mattress should align with your personal comfort preferences. Some people prefer the plush feel of a softer mattress, while others prefer the firm support of a firmer mattress. Health Conditions: Certain health conditions, such as chronic pain or arthritis, may influence your choice of mattress firmness. In such cases, it's essential to consult with a healthcare professional for personalised recommendations.

Do mattresses come with a sleep trial?

Yes, typically they come with a sleep trial period, allowing you to try out the mattress in the comfort of your own home before making a final decision. During the sleep trial period, you have the opportunity to sleep on the mattress and determine if it meets your comfort and support needs. If, for any reason, you are not satisfied with the mattress during the sleep trial period, you may be eligible to return it for a full refund or exchange, subject to the terms and conditions of the sleep trial policy. This allows you to make an informed decision about your mattress purchase without the risk of being stuck with a mattress that doesn't meet your needs. It's essential to review the specific terms and duration of the sleep trial period for the mattress you are interested in, as these details may vary depending on the model and promotional offers available at the time of purchase. Additionally, be sure to follow any instructions regarding the return process to ensure a smooth and hassle-free experience.

How do I care for my mattress?

Here are some general care and maintenance tips: Use a Mattress Protector: Consider using a mattress protector to help prevent spills, stains, and dust mites from penetrating the mattress. A waterproof or water-resistant mattress protector can provide an additional layer of protection against accidents and spills. Keep the Mattress Clean: Vacuum your mattress periodically to remove dust, debris, and allergens that can accumulate over time. Use a handheld vacuum with an upholstery attachment to gently vacuum the surface of the mattress. Spot Clean Stains: If spills or stains occur, spot clean the affected area immediately with a mild detergent and water. Blot the stain with a clean cloth or sponge, taking care not to saturate the mattress. Allow the mattress to air dry thoroughly before replacing the bedding. By following these care and maintenance tips, you can help prolong the life of your mattress and enjoy a comfortable and supportive sleep surface for years to come.

Are mattresses compatible with adjustable bed frames?

Yes, many are compatible with adjustable bed frames, allowing you to customise your sleep position for optimal comfort and support. Adjustable bed frames, also known as power bases or adjustable bases, allow you to elevate or recline different parts of the mattress to achieve your desired sleeping position. When using a mattress with an adjustable bed frame, it's essential to follow any guidelines or recommendations provided by the mattress manufacturer to ensure proper support and functionality. Additionally, be sure to check the warranty terms and conditions to confirm that using the mattress with an adjustable bed frame does not void the warranty coverage. For more Details Read out our Mattress Guide.