Boyd Specialty Sleep Sleep Sync 12 inch California King size Latex Foam Mattress (King ) Most Affordable king foam mattress12 Inch California King Size Gel Infused Memory Foam Mattress by Eco Planet. Get free shipping at Wholesale Safety and Environmental Seal as established by the Specialty Sleep Association. To achieve this Boyd ,Find great deals on eBay for 12 king size foam mattress and 14 king size foam Boyd Flotation 12" High King Size Eco-Friendly...