Corner Keepers Duvet Cover Snaps - Holds Your Comforter in Place All Night, No More Shifting, Easy Iron-On Install, Strong Simple Solution, Less Bulky Than Clips 65% Polyester/ 35% Cotton Made in US Keep your comforter/duvet in place all night long Easy to install and use: Just iron and snap Makes changing the cover on your comforter super easy Comes with 4 comforter snaps and 8 cover snaps - enough for 1 comforter and 2 covers Not bulky or hard like other corner clips