This deal from Wowcher
From £79 for a single, small double or double (£89) or king (£109) Cool-Blue Memory Foam Mattress from Mattress Haven – save up to 74%
Enjoy a perfect sleep with this Cool-blue memory foam mattress. Available in single, small double, double and king sizes. Featuring a unique quilted top panel and border Promotes good blood circulation and helps relieve pressure points. Features a layer of memory foam. Hypo-allergenic filling and coil spring.