Super King Size Duvets

Enjoy comfort that’s out of this world in one of the largest duvet sizes available in the UK from the most innovative duvet producer. We take the business of sleep very seriously and have worked tirelessly to create a duvet that keeps you comfortable, covered and at a comfortable temperature all night long.

There’s also free delivery and returns and a one-year guarantee on all our Simba Hybrid Duvets.

We think this is the most technologically advanced duvet on the market and we’re fully committed to making our super king duvets from materials that are as ethically sourced and sustainable as possible.

Our Simba Hybrid®'s and Simba Hybrid® 3-in-1 super king-size duvets feature three layers. The first layer is a cotton cover combined with our Stratos® technology to help keep you at a comfortable temperature through the night. 

Next are multiple layers of Simba Renew® fibre fillings, tiny fibres that are made using recycled materials. Finally, there’s more exquisitely soft cotton, which is blended with incredibly fine and airy Modal fibres.

As sleep obsessives, we’ve designed all the super king duvets for sale here at Simba to be as clever as they are soft. Here’s how we’ve done it: 

• Stratos® technology - This astronaut-inspired technology is designed to encourage heat to dissipate away from the body while providing a ‘cool to the touch’ sensation.
• Simba Renew clusters - These tiny 3D clusters create the silky and smooth down-like softness inside every Simba duvet. We comb, multi-layer and fold them like never before to create an incredibly light duvet with a fabulous warmth to weight ratio.  
• Modal fibres - Our Simba Hybrid 3-in-1 super king duvet is blended with Modal fibres. They’re soft and airy and can help to wick moisture away from the body to keep you fresher.

Between our Simba Hybrid's and Simba Hybrid 3-in-1 super king-size duvets, we have a tog rating for every season and sleeping type.

The Simba Hybrid super king duvet is 10.5 tog, making it a great all-season duvet and a lightweight, comfortable pick which may also help sleepers who have trouble maintaining a consistent body temperature at night.

The Simba Hybrid 3-in-1 super king duvet includes a 7 tog duvet for milder spring and autumn nights and a 3.5 tog duvet for the summer. Just join them together to create a 10.5 tog duvet that’s just right for winter.

Simba Summer Hybrid Duvet - A lighter 4.5 top duvet filled with down-like Simba Renew Bio ™ fibres, offering fresh, gentle comfort, It’s a must for warmer months or anyone who gets too hot at night.

Simba super king duvets are L220cm x W260cm, which is the standard duvet size for a UK super king bed.

We also sell luxurious Single Duvets, Double Duvets and King Size Duvets.

Like all of our Simba Hybrid duvets, you can wash your super king duvet in your washing machine at 40°C and tumble dry it on the lowest heat. We recommend using a 9kg machine or larger when washing a super king duvet. It should fit in the drum loosely, allowing the water and detergent to flow through the drum and duvet freely.

King size and super king duvets are the only duvets that are wider than they are long. When making your bed, the longest side of the duvet should go horizontally across it.

The super king duvet is one of the largest duvet sizes in the UK. However, there’s also an emperor-size duvet that’s L235cm x W290cm. It’s rare to find emperor beds in people’s homes but they are popular in hotels.