What size is a super king mattress?

A standard super king mattress measures 180cm x 200cm (6' x 6'6"), offering ample space for two adults to sleep comfortably. This size is 30cm wider than a king-size mattress, making it ideal for master bedrooms or larger rooms where space is available.

If you're furnishing a new bedroom or replacing your current bed, explore our range of super king beds to find the perfect match.

Why choose a super king-size mattress?

More space for uninterrupted sleep

The extra width of a super king-size mattress means you’re less likely to be disturbed by a partner’s movements, helping both of you enjoy deeper, more restorative sleep. 

Flexible comfort with zip and link options

We also stock a selection of zip and link mattresses. A zip and link super king mattress is made up of two individual mattresses that zip together to form a full super king size. This option is ideal for couples with different comfort preferences.

Ideal for taller sleepers and larger bedrooms

If you’re taller than average, a super king provides additional length for improved comfort and support. And in larger bedrooms, it creates a luxurious centrepiece that transforms your space into a true sleep sanctuary.

What fillings and layers are used in super king mattresses?

Super king mattresses at Grove are made using high-quality materials designed to support better sleep. Our range includes super king memory foam mattresses for body-contouring comfort, open coil for consistent support, latex for a gently springy feel, and natural fillings such as wool or cotton to help regulate temperature. Many mattresses also feature quilted comfort layers to add softness while evenly distributing weight.

What firmness options are available in super king mattresses?

Super king mattresses are available in a wide range of firmness ratings, allowing you to choose what feels best for your body. Softer options provide cushioned comfort for side sleepers, while medium and medium firm mattresses offer balanced support suitable for most sleep positions. Firm super king mattresses are ideal for back or stomach sleepers who need extra spinal support to wake up feeling comfortable and refreshed.

Why should I buy a super king mattress from Grove?

We've been helping people of the UK sleep better since 1964, and our Excellent Trustpilot rating is a testament to our commitment and customer service. 

Shop super king bed mattresses from Grove today and enjoy flexible payment options and free UK delivery. With our roll-up mattresses, moving and setting up your super king mattress is effortless.