Snuggledown Duck Feather & Down duvet is specially constructed using a blend of 85 percent Duck Feather and 15 percent Duck Down; which is then encased in a 230 thread count soft cotton fabric. To keep the fillings in place we use a clever internal box construction which ensures no cold spots develop, keeping your body evenly warm throughout the night.Rest easy knowing our product is made with your well-being and the environment in mind. The Responsible Down Standard (RDS) ensures the down is sourced from ducks and geese that have been treated humanely. The OEKO-TEX certification means it's been tested for harmful substances, providing you with a safe and healthy product.