Fabbrica Home Luxe-Warming Thermal Retention Comforter Duvet with Volcanic Fiber - White (Twin - 68" x 88") STAY WARM WHILE YOU SLEEP - Volcanic stone powder blended with the duvet fibers store body heat for hours so the comforter stays warm throughout the night. VOLCANIC STONE INFUSED - Fibers and fill infused with the remarkable heat retention abilities of volcanic stone SILKY AGAINST SKIN AND EXTRA FLUFFY DOWN-LIKE FILLING - High density fill makes for a super fluffy, plush comforter that feels like sinking into a cloud. BAFFLE-BOX STICHING - Keeps inner fill lofty and evenly distributed throughout the blanket comforter. THREE SIZES TO FIT INTO ALL DUVET COVERS - Comes in King, Queen/Full, and Twin bed sizes to match all bedsheets and duvet covers.