100% Sateen Cotton LIGHT WARMTH COMFORTER - This Martha Stewart white down comforter is designed to provide light warmth, good for warmer weather or when you have your thermostat set as a higher degree. There are 3 size for your choice: Twin size 68x90 "filled with 20oz. Full/Queen size: 90x90" filled with 27oz. King size: 106x90 " filled with 32oz. PREMIUM MATERIAL - Martha Stewart Duvet Insert is made from 300TC 100% sateen cotton fabric that is smooth and softer, durable more luxuriously feel compared to regular cotton, and is filled with 75% white down and 25% white feathers. Our unique FreshLoft cleaning process makes the down and feathers hypoallergenic. So The premium fillings are all passed the RDS, OEKO-TEX certified. EXQUISITE DESIGN - The Baffle Box design keeps the down evenly in place for maximum loft and to eliminate cold spots. The duvet has 4 corner loops which are very handy for attaching a duvet cover and anchoring the down comforter to prevent it from moving. USAGE CARE - When taking it off the packaging, please gently tap and allow the comforter to sit for a few moments to restore its original shape. Spot clean or DRY CLEAN if necessary. WARMTH CHOICE - Customers can choose our duvet insert from lightwarmth or all seasons warmth. Lightwarmth down comforter is recommended for warmer weather or when you have your thermostat set as a higher degree. If you're a cold sleeper or transitioning into the winter, we recommend trying the All Seasons duvet.