Our mattress is designed with a 7-layer structure to ensure its durability and long-lasting use. The 6-turn coil system has been proven time and again to offer exceptional support, and our spring mattress provides a full body support so that you awake refreshed and revitalised. The mattress also uses a CertiPUR certified foam to ensure that no harmful elements are present in its production. The bonnell spring mattress utilises a silver-ions knitted fabric that meets stringent Oeko-Tex standards for a non-toxic finish that is allergy-free as well as dust mite and mould-resistant. In short, you have total peace of mind with safety and hygiene. Plus, the bonnell spring mattress provides a 3600 ventilation to ensure the mattress is always fresh during and after use. The reinforced edging helps to maintain and retain the shape of the mattress consistently. Features CertiPUR certification,Oeko-Tex standard Silver-ions knitted fabric,7-layer structure Medium-firm support,6-turn coil system Stable bonnell spring system Full body support Hypo-allergenic material Dust mite and mould resistant 360° ventilation Reinforced edging Note: The mattress is vacuum packed. Please allow mattress to expand to normal size in one or two days after unpacking.