Hand-nested calico pocket spring construction. Spring tension: soft, medium, firm & extra firm. Made exclusively from natural fillings: British fleece wool, hand-teased Devonshire fleece wool, British fleece needled wool. Finest quality ticking. Hand tufted with felt washers. This bed is available as a mattress only option. Bed base is available as shallow with legs (as per illustration), a low divan base on castors, or as a standard divan base.