Quince Bamboo Duvet Cover Set King / California King Sand New without tags Color: Sand Includes 1 King/Cal King Duvet cover The super soft duvet you've always dreamed of. Our mid-weight bamboo duvet is 100% viscose from organic bamboo which is one of the planet's most resource-efficient materials as it grows quickly and uses far less water than cotton. Our duvet is luxuriously soft and silky smooth with a sateen weave and temperature regulating properties. Featuring clean, tailored hems, this set is perfect for year-round comfort.