The in homeware Anti-Allergy Cot Duvet features a 100% cotton cover filled with soft, hypoallergenic polyester fibres. It has been micro-fresh treated that prevents 99.9% of bacteria growth. It will make a perfect choice if your baby suffers from asthma or allergies. The 4 tog thickness is perfect for warmer months to keep your baby snug and warm without getting too warm. Not suitable for children under 12 months old. Cover: 100% Cotton. Filling: 100% Polyester Fibre.