University Contract Mattress (Source5). An entry level foam mattress. If you think you'd like a foam mattress but don't have the budget for memory foam, this is a good place to start looking. The reflex foam it's made from is often used for support underneath memory foam and still provides adequate support. This mattress is source 5, making it perfect for hotels, halls etc. So buy this University Contract Mattress (Source5) Was £149.00 Now £129.00.