3 duvets in 1 - Use the 4.5 tog for summer, the 9 tog for spring and autumn, or clip them together for a cosy 13.5 tog winter duvet. Generously filled with 85% goose feather and 15% down, this super king quilt that adapts to every season for year-round comfort. Breathable Cotton Luxury - Encased in a 230tc cotton cover that feels cool and soft to the touch, this superking duvet promotes airflow and helps regulate your body temperature - keeping you cool in summer and cosy in winter. Baffle Box Construction - Designed with box-stitched baffle walls that keep the natural fill evenly distributed, this cotton duvet stays plump, cosy, and balanced - no clumping, no cold spots, just lasting comfort night after night. 2-Year Quality Guarantee - Our summer bedding is crafted and hand finished in the UK using premium materials. We are dedicated to delivering exceptional quality and ultimate comfort, backed by a thorough 2-year guarantee. Easy to Care for - We want to make life easier for you, that’s why our summer duvet is machine washable at 40°C and tumble dryer friendly, so it can be back on your bed as quickly as you need it.