Amazon offers £40 off king size mattress sale

Amazon is offering a £40 discount on the Dosleeps 9.4 Inch King Size Mattress, now priced at £169.99. This sale comes after Simba's recent 20% off promotion ended on March 16. The Dosleeps mattress features nine zones of pocket springs and a memory foam layer for comfort. It is designed to fit standard king size bed frames and arrives rolled for easy setup. Customer reviews highlight its comfort and value, though some users reported issues with firmness. Other retailers like Dunelm and Wayfair also have mattress sales available.