3ft6 Large Single Mattress

3ft6 Large Single Mattresses in Ireland - 19 Options with Free Delivery

A 3ft6 large single mattress measures 110 x 190cm — wider than a standard 3ft single (90cm) but narrower than a 4ft small double (120cm). At Beds.ie, we stock 19 large single mattresses with free delivery across Ireland and Northern Ireland. This in-between size is more common than you might think, and finding the right mattress for it can be tricky on the high street.

The 3ft6 mattress — sometimes called a large single, big single, or three foot six — is popular for several reasons. It gives a single sleeper 20cm more width than a standard single, which makes a noticeable difference for larger teenagers and adults who find a 3ft too narrow. It also fits rooms that are too small for a 4ft small double but can comfortably accommodate something wider than a standard single.

Who Buys a 3ft6 Mattress?

Teenagers outgrowing their childhood single bed are the most common buyers. A 3ft6 provides extra sleeping width without needing a bigger room. Single adults in guest rooms and spare bedrooms also benefit from the wider sleeping surface. And if you have an older bed frame or divan base that measures 3ft6, replacing the mattress with the correct size is essential — a 3ft mattress will slide around on a 3ft6 base, and a 4ft will not fit at all.

3ft6 Mattress Dimensions

A large single mattress measures approximately 110cm wide by 190cm long, or 3 feet 6 inches by 6 feet 3 inches. Always double-check your bed frame or divan base measurements before ordering. The 3ft6 size may also be listed as 110cm, large single, or three foot six depending on the manufacturer.

Need Help?

With over 35 years in the business, our team can help you find the right large single mattress. Call or WhatsApp us for advice.