Easy to Care For Since very light duvets are generally made with washable materials, they are easy to maintain Easy to Care For Since very light duvets are generally made with washable materials, they are easy to maintainvery light duvet insert. You can simply throw them in the washing machine and tumble dry on low heat, ensuring that they stay fresh and clean for a long time.Extra Lightweight duvet inserts are perfect for those who like the feeling of being almost non-existent. Extra Lightweight duvet inserts are great for warmer climates or for people who tend to sleep hot. Extra Lightweight duvet inserts provide a thin layer of insulation without feeling too heavy or suffocating. An extra Lightweight duvet insert is also a great option for layering with other bedding during the colder months.