The SnuzPod⁴ mattress is designed with a 3D breathable mesh surface for firmer support and sustained comfort for your little one, as recommended by sleep experts. From birth to 6 months. Removable and washable cover at 40 degrees. Waterproof mattress protector required. Mattress size 40x75.5x3cm. Waterproof mattress protector must be used. Not suitable for use with sensor pad.