It looks like there is a couple stray marks on flat sheet, not sure how. See photos

The Ralph Lauren Brooke Floral Yellow Sheet Set is a charming addition to any bedroom, featuring a vibrant yellow/multicolor floral pattern perfect for adding a touch of shabby chic style. Made from 100% cotton, these sheets are not only stylish but also breathable and deep-fitted up to 14 inches. The set includes both fitted and full sheets, suitable for teens and adults alike. With easy care instructions for machine wash or line/tumble dry, this cozy set is a must-have for those looking to enhance their bedroom with a touch of cottage charm.