CONSTRUCTION. *Hand-nested calico pocket spring construction *950 springs in a King size 150 x 200cm *Solid timber frame . PARTNERED MATTRESSES. *VispringShetland . UPHOLSTERY. *Softley needled 600 gsm and heavily needled Platinum Certified British fleece wool 1200 gsm *Finest quality ticking or upholstery fabric . HEIGHT. *Wool Prestige high 31 cm with drawer options available *Wool Prestigelow 25 cm *Wool PrestigeshallowBed base 17 cm . GUARANTEE: Vispring Divans and bed bases carry a 30 Year Guarantee. . gsm - grammes per square metre.