Offers and Promotions King Koil Singapore Sale Promo Mattresses: Save at Least S$301 to S$651 on Select Models, Listing Until 15 Nov 2026 King Koil Singapore's online shop lists two "Sale Promo" mattresses with stated savings of at least S$301 and S$651, plus free pillows and a mattress protector. The page shows no dates, so confirm before you buy. Nov 8, 2026
