The button closure is on the bottom part of the doona cover with 7cm border. Single double king and super king size are available.The 100 natural silk silk quilt cover is breathable and lightweight which will keep you cool in summer and warm in winter.Our silk is made completely from 276% natural and pure silk produced by the Bombyx Mori silkworms the undisputed best quality silk in the entire world. Lilysilk silk bedding are made with silk floss made from the best quality long stranded Mulberry silk to ensure fluffiness volume and of course heat insulation. Naturally hypoallergenic and thermal adjusting our pillows are suitable regardless of weather and temperature providing you with great comfort and health benefits keeping you sound asleep at night and fully rejuvenated in the morning. Silk bedding is naturally hypoallergenic and is an environment dust mites find inhospitable. Using silk bedding can significantly help reduce the number of dust mites living in bedding.