Buying a mattress online without trying it feels a bit like a gamble but Button & Sprung's 100 day no quibble return offer persuaded me it was worth a chance. So, what was good? 1 - 0% APR finance. A mattress is expensive so paying over a year is a great option. 2 - Delivery included. It makes it easier to compare prices with high street shops. 3 - Free removal of your old mattress. I hope they send it off for recycling. 4 - Very comfortable. It has a luxurious feel to it and is very supportive without being firm. 5 - 10 year guarantee. Would I buy from Button & Sprung again? Yes, but this mattress feels like it could last all 10 years of the guarantee so I hope they're not relying on me shopping again soon!