UNDERLIG white, Foam mattress for junior bed, 70x160 cm - IKEA
Kono Double Mattress, 8 Inch Pocket Sprung Memory Foam Mattress 4FT6 with Breathable Foam and Luxurious Jersey Knitted Fabric, Medium Firm Bed Mattress Fire Resistant(Double, 135x190x20cm) : Amazon.co.uk: Home & Kitchen