Jersey Knit Ultra Soft & 4-way Stretch: Made of 100% high quality soft stretchy jersey knit fabric. GRSSDER mini crib sheets offer a breathable, sweat-absorbent tee shirt like feel for exceptional comfort, providing your little ones a safe and to stay in place throughout the day. Universal Fit \u2013 Measuring 38" X 24"x 6". Our mini baby crib sheets come with an elastic band all around the sides to securely fit all standard pack n play mattresses. They are very easy to put in place even when you need to change pack n play mattresses sheets in a hurry. Perfect as a baby shower gift or for your own nursery. Apple It Within Seconds: Thanks to the elastic bottom, our pack n play sheets come in a classic, Cute elephant print that will put the finishing touches to any bedding. Make sure to give your darling a serene and calm bed to rest in. Clean It Without Hassle: This mini crib mattress protector can be cleaned easily and effortlessly, as it\u2019s machine washable and dry clean. Under normal circumstances, our toddler bed sheets will withstand thousands of washing. Top Rated Customer Service: If you have any question with these pack n play mattress sheets, please contact us, we will reply within 24 hours. We offer an 30-day money-back guarantee, if the purchase has any quality defect, please be assured the purchase.