Not sure what size mattress you have? You can measure it then match up the dimensions to the standard sizes above. First, remove all sheets, pillows, and blankets from your bed (they can make it ...

we've gathered together all the information you need about mattress sizes for cot beds, crib beds, toddler beds and your child's first 'proper bed', plus the ages they roughly correlate to.

Shopping for a single bed? Put your hands behind your head ... Below, we list all the main mattress sizes in the UK and their dimensions in centimetres, and in brackets you’ll find a conversion ...