DMG 6115 Sample Mattress. This 4'6 Sample mattress is an ex-display model from one of our stores.This item may have some marks from shop use.This is why it is available at this cheaper price. Make sure you grab a bargain today! Please note that this mattress has been laid on but not slept on!! And buy this DMG 6115 Sample Mattress Was £199.00 Now £149.00.