Perfectly Fit: The dimension of the crib mattress sheet is 52”X 28”X 8”. With the elastic bandage surround, ensures our crib mattress sheets can snug fit your crib mattress no loose but flat which gives your baby a comfortable bedding. | Highest Quality: These crib mattress sheets are made of ultra soft microfiber, woven into a soft and durable fabric. Your baby will be enjoying the soft, smooth and comfortable feeling all day when sleeps or plays in the crib. Also our crib mattress sheets are washable and pre-shrinked. | Eco-friendly, Durable and Machine-washable: Tired of gasoline-like smells and holes in new sheets? We’ve got you covered! Our 100% microfiber knit sheets are produced under stringent environmental standards, so you get peace of mind when your little one sleeps. Our crib fitted sheets are machine washable and dryer friendly. | Easy Care:Machine washable on gentle cycle. Tumble dry on low heat or line dry. Avoid directly heat. | Biloban's Life-time Guarantee: Biloban's quality you can trust. If the product does not meet your needs for any reason, replacement or money back, no questions asked!(Recently some customers said they received only one sheet, that's a tiny misunderstanding, because the one sheet is folded inside the other, 2 sheets will come out after unpacking. Of course we will upgrade the packaging soon to clear the air.)