Mari Ann duvets, pillows, and bed sheets are made with luxurious charmeuse silk. The silk is grade A, the highest grade available. Naturally hypoallergenic, their silk comforters help keep you naturally warm in the winter and cool in the summer. Mari Ann only utilizes the top 3% of mulberry silk to create the lightest and most breathable all season comforters. Signature pillows filled with protein rich silk fibers nourish your skin and hair while you sleep. Experience the soft and lightweight comfort of Mari Ann silk bedding.