Obaby's sprung mattress is the ideal option for keeping baby cosy at bedtime. Measuring 120 x 60 x 10cm, the mattress consists of a Bonnel spring unit encased in a high grade dent resistant nursery foam, which ensures extra comfort for baby. The luxury bound deluxe Freshtec cover is water resistant, washable at 60ºC and is fully breathable. Add to this the adjustable waterproof membrane for protecting the mattress interior and you have a mattress which is perfect for providing a good night's sleep.