What You'll Get with a Twin XL: 1 flat 66x102", 1 fitted 39x80x15", 1 pillowcase 21x31". This set has everything you need for a great night's sleep! 100% Polyester Microfiber: These sheets are 90 GSM and designed to keep you warm and comfy all night. Fully Elastic: There's nothing easier than putting on our fully elastic fitted sheets. Our sheets are designed to fit all mattresses with a depth that does go over 15” inches. Wrinkle Resistant: Not only are these sheets resistant to wrinkles, but they are also resistant to staining, and shrinking! Dryer safe, make sure to wash these sheets in cold water. TORREY LANE believes in giving our customers the highest quality products. We care about our designs, and know that you'll love them, too!