Both styles are super comfortable depending on the temperature of your home, or if you are more of a hot sleeper. Generally, our minky Beddy's can be used year-round and is preferred by most customers. Our all-cotton options are a generally cooler To get a better idea of the fabrics we have to offer, visit our "Which Fabric Should I Choose Page".   Minky:  ·      Exterior: 100% cotton with a soft sateen finish.  ·      Interior: The underside of the comforter is finished with "Minky" fabric, which is an ultra-soft and cuddly 100% polyester fabric. All sewn-in base sheets are made with the same 100% cotton as the exterior.  ·      Fill:  All Beddy's use 100% polyester fill.  ·      Check out our Minky options here!   All-Cotton:  ·      Exterior: 100% cotton with a soft sateen finish.  ·      Interior: 100% cotton with a soft sateen finish.  ·      Fill:  All Beddy's use 100% polyester fill.  ·      Check out our All-Cotton options here!