Wondrous 40,000 The Wondrous is the ultimate in pure luxury. Its incredible range of natural fillings including cashmere, silk, Swaledale wool, Yorkshire wool, British wool, homegrown hemp and flax and viscose offer responsive support and sumptuous softness. Each filling is expertly blended and works in harmony with a 40000 Sensa Intelligent spring system, with a natural pocket cloth Cortec™ spring core, offering responsive support and a luxurious night’s sleep. Exquisitely designed the Wondrous is finished with six rows of meticulous diamond hand side stitching and an in-house woven, premium super soft feel FR chemical treatment free fabric.