This pressure-relief, waterproof, and breathable OXI Proof mattress topper is designed to enhance sleep comfort and reduce pressure on the child's body. Made from an advanced 5 cm 3D Aero Mesh spacer fabric, it provides optimal softness while supporting and stabilising the child's delicate spine. The open mesh structure ensures excellent airflow, helping to prevent overheating and skin irritation during sleep. The topper also includes a breathable polyurethane membrane that effectively protects the mattress from moisture and liquid spills without compromising ventilation. For added convenience, elastic corner straps keep the topper securely in place, making it easy to attach and preventing movement during the night. Certified with OEKO-TEX Standard 100, this topper meets high safety and quality standards. Size: 70 × 140 cm Material Composition: 100% polyester (including 3D Aero Mesh + breathable PU membrane) Fabric Weight: 350 g/m² Care Instructions: Wash at 60°C; do not bleach; do not iron; do not dry clean; hang to dry upright.