Bundle of Dreams Classic 6-Inch Mattress Through extensive research, identifying the best features became apparent. However, no individual mattress had all of those features. Combining health, cleanliness, breathability, and environmental awareness into a comfortable night sleep with an emphasis on your child's development, was how each individual specification was chosen. Made from our healthier Bundle Fiber, its revolutionary Memory technology provides lasting comfort with no off-gassing or VOC's to ensure a safer night sleep. Its dual-purpose, sleep surfaces give your little ones the firm support they need in their infancy, and the cozy memory feel for your toddler. Features: Two Stage This mattress offers 2 different firmness levels on either side of the mattress. One side for infants, the other for toddlers. 100% Breathable 100% breathable mattress helps regulate temperature by allowing air to pass through the entire mattress Hypoallergenic Made with cotton and other hypoallergenic materials with no VOCs, off-gassing chemicals, nor toxic emissions Water Repellent Includes removable, water-repellent cover that's machine washable for easy cleaning GreenGuard Gold Certified All Bundle of Dreams mattresses are GreenGuard Gold Certified. This ensures that our products and materials are thoroughly tested for low chemical emissions and provide a resource for choosing healthier products and materials for indoor environments.