This deal from Wowcher
From £25 for a kids single open coil spring football mattress in red or blue from Desire Beds!
Kids mattress: Get a kids football mattress. Five sizes: Choose between small single, single, shorty, EU small single and EU single. Two colours: In red or blue designs with a football pattern. Open coil: Made with a 13.5 gauge open coil spring system for even weight distribution. Anti-allergy: Hypoallergenic and anti-dust mite.