In order to protect your back, this baby cot has been designed with a 3 position mattress base height and is crafted from solid wood. Included is the 4baby Deluxe Foam cot safety mattress which provides superior comfort and support when compared to fibre alternatives. Hypo-allergenic in nature and providing breathable and moisture resistant properties, air is able to pass through the material of the mattress, helping to reduce perspiration and providing your baby a more comfortable and undisturbed sleep.