【HIGH-QUALITY MATERIAL, COMFORTABLE AND BREATHABLE】The baby crib mattresses is composed of 4 layers of materials-ultra soft cover, waterproof lining foam, and classic spring core. The ultra soft cover increases comfort, softness, and breath-ability, the comfort foam has stronger shock absorption and anti-interference ability, less pressure on the baby's skin, and there are many ventilation holes on the foam, allowing the baby to sleep well more peaceful and comfortable. 【Safe Sleeping Space for Your Little One】This toddler mattress is designed to allow maximum airflow to your baby for safer and better sleep. All Sweet Love baby crib mattress's core are made with certified CertiPUR-US foam, which meets the highest standards for air quality and is made without toxic flame retardants, formaldehyde, or heavy metals. 【Reversible & Double-Sided Use Crib Mattress】2-Stage Dual firmness designed to grow with your baby, give babies the support their bones and skeletons need as they develop and grow. One side is firm for when they’re small, and the other is plusher for the toddler years. You can flip it depending on what you require, it is more appropriate for toddlers who still use a crib or convertible toddler bed. 【Keep Baby’s Mattress Clean】 Our Reversible Waterproof Toddler Mattress Includes a Waterproof Exterior Protector for Shielding the Mattress from Dirt, Dust, Liquid Spills & Nighttime Accidents | Eco-Friendly Hypoallergenic Organic Cotton Won’t Expose Your Baby to Harsh Chemicals or Irritants. All items are dispatched from our warehouse in Melbourne, Australia within 3 business day by AUSPOST. Sweet Love BABY BED MATTRESS Treat your newborn or infant baby to a safe and peaceful sleep night after night with Sweet Love premium baby mattress. This high quality foam mattress has been designed to cradle your baby with the gentle yet firm support you would find in mattresses costing twice the price. Constructed with the highest quality fire safe materials, our mattresses meet all safety regulations and have been tested for durability and comfort. The 13 cm thick baby mattress uses an 11-layer structure design and an egg-shaped foam layer, which meets strict standards and can provide comfortable and gentle rest and support.The waterproof knitted fabric is absolutely breathable and is also beneficial to baby's skin health. More importantly, the hardness of the baby mattress is just right, which can make your baby rest under the sufficient support of the spine and bend naturally, reducing the pressure during sleep. The mattress is made with rounded corners, reinforced edges and elegant stitching to keep the baby safe. It is especially important that the mattress can be used on both sides to provide comprehensive convenience.