Society6 Undertale Duvet Covers Full: 79" x 79" Hand sewn and meticulously crafted, these lightweight duvet covers vividly feature your favorite designs with a soft white reverse side. A durable and hidden zipper offers simple assembly for easy care - machine washable with cold water on gentle cycle with mild detergent. Available for King, Queen and Full duvets - duvet insert not included. Queen duvet cover works for Twin XL beds. An independent artist profits from every purchase with Society6.