This is a Standard Fitted Crib Sheet. The crib sheet will fit a standard crib or toddler mattress measuring approx 28x52 inches. The fabric used is 100 percent cotton and carefully selected for quality. All of the seams have been serged for durability and a professional finish so this sheet will be sure to last. The elastic runs all the way around the sheet and it is completely encased for a nice and snug fit with no exposed elastic. Feel free to message me if you need a custom size or would like a particular fabric.