Pottery Barn Hydrocool Duvet Insert All Season Comforter Filled with down-alternative Hydrocool®, this duvet insert wicks away moisture while you sleep, providing cool, dry comfort so you can rest easy. Wrapped in smooth cotton, it’s a hypoallergenic option you can feel good about. Size: Full/Queen - 92x88" Light-Mid Weight for moderate climates and sleepers - 42oz fill Made with 100% cotton striped damask cover. 300 thread count Filled with 60% regenerated polyester (made from 100% recycled plastic bottles) and 40% HydroCool® performance polyester. As you sleep, temperature and humidity build-up and become trapped in your sleep environment or microclimate. Hydrocool® yarns pull moisture away from the skin to evaporate on the surface of the fabric rather than on the body itself. Dry comfort for warm sleepers. Reduces the opportunity for growth of bacteria-driven allergens in the fill by removing moisture for it to grow in. Hydrocool® high-performance properties last the life of the product. Excellent condition with minimal use on guest bed.