Crown your King size bed with a King size mattress topper! Springier mornings await… Your luxurious king size bed needs a king size mattress topper. Why? We think a gorgeous bed like that becomes even better with a squishy, thick mattress topper smothered on top. It’ll be springier, cosier, and lusher than ever! King size mattress toppers are made to fit a mattress that measures 150cm x 200cm (5ft x 6ft 6”). We think it’s the perfect size – a generous sleeping space that isn’t too difficult to make up in the morning. A lot of people must agree as it’s the best selling size in the UK! In our king size mattress topper range, you’ll find lots of favourites: firm and thick duck feather, amazingly thick Ultimate Microfibre, and sublime Canadian Goose down. If you need advice, just shout! Tip: Mattress toppers can be a pain to clean as they’re pretty bulky. To keep them fresher for longer, air your bed topper on a washing line (sunlight is really good for natural fibres) or stair banister every time you change the sheets.