This Jay-Be toddler mattress is designed with the environment and your toddler’s future in mind. It has a medium firmness with spring and comfort layers to offer additional support. It is also infused with the latest pro-biotic anti-allergy technology to actively create a healthier sleeping environment. Purotex® is a 100% natural pro-biotic remedy which absorbs moisture and lowers the presence of dust mites and other allergens, helping to reduce the potential trigger of allergic reactions which can interrupt sleep.