6 PIECE BED SHEET SET: 4 pillow cases and a flat sheet and fitted sheet. Flat Sheet. Fitted Sheet (78 x 80) 4 Pillow Cases DEEP POCKETS/ EASY FIT: They fit mattresses up to around 17 inches deep. If your mattress is smaller than 16 inches it will fit just fine. A lot of mattresses are pretty big these days and we feel this is a good universal size that fits most mattresses. FEEL THE DIFFERENCE: If you're looking for very soft sheets you have found them! They're breathable, cool and super soft. The comfort of these sheets will have you coming back! They're softer than Egyptian cotton and organic cotton sheets! Best for any room in your house - bedroom, guest room, RV, vacation home. Great gift idea for everyone.