The two-layer Blue Wave baby mattress offers outstanding sleeping comfort thanks to the use of a dimensionally stable mattress base and a cosy topper made of cold foam with a wave profile. With the OEKO-TEX® seal, the Hohenstein Institute certifies that all components of the Julius Zöllner mattress have been tested for harmful substances and comply with OEKO-TEX® Standard 100 product class 1 for baby products. Product class 1 for baby products is the strictest of a total of 4 product classes of the OEKO-TEX® Standard 100. All Julius Zöllner baby mattresses are developed and manufactured in accordance with the specifications of DIN EN 16890:2021. Our mattress covers can be washed in the washing machine at up to 60°C. We recommend special detergents for babies without fragrances. The mattress cover can be tumble-dried or gently air-dried. The cover should only be put on again once it is completely dry.