Silk & mohair fillings make this a blissfully comfortable zip & link mattress. Available in tensions 4 (soft) to 8 (our firmest tension) 3 rows of hand side stitching for edge-to-edge support. Turn with the seasons Fillings Revolution pocket springs HD pocket springs Hempure Fibres Horsehair Wool blend Mohair wool & Egyptian cotton surface fillings Visit any of our stores to be individally fitted for your perfect mattress.