'- Organic Cotton Fabric: The bed mattress is crafted from organic cotton-jersey knitted fabric for both the inner and outer covers, including the bottom. This eco-friendly material is breathable, moisture-wicking, skin-friendly, and hypoallergenic, promoting healthy and comfortable sleep. - Food-contact-safe Silicone Foam: The quilted cover includes a 5mm silicone foam layer that is antibacterial and mite-resistant, enhancing the cover ¡¥s breathability and texture for added comfort and a refreshing sleep experience. - Skin-friendly Quilted Cover: Soft and comfortable, the quilted outer cover can be used directly against the skin after washing. Its tight quilted stitches add durability and style, while the integrated quilting on the top and sides improves breathability and aesthetics. - Removable and Washable: Both the outer cover and inner lining can be easily removed and washed. Please note that the organic cotton fabric has a 5%-10% shrinkage rate, so the inner cover is slightly larger than the core to ensure a proper fit after washing. - Used in Different Stages and Situations: Designed with high-density foam for infants and a gel memory foam side for toddlers, this mattress caters to different developmental needs. When not in use as a mattress, the inner core can be unfolded and used as a play mat, adding versatility to your child's space. - Waterproof Inner Cover: The inner cover on the baby ¡¥s contact surface features a waterproof surface, effectively preventing liquids from penetrating the mattress core and keeping it dry and hygienic.