Microfiber PREMIUM MATERIALS & WELL-CRAFTED: The crib mattress protector is made of food-grade material with good water-resistance (TPU) and comfortable touch (super soft microfiber surface). Besides, the nice quilting process makes the crib mattress protector stable, elegant, and prolongs the life of your crib mattress. 100% WATERPROOF & NOISELSS: The inner surface of the crib mattress protector effectively against URINE, MILK, SWEAT or other liquids soaking into the valuable crib mattress. And we perfectly balance the thickness of membrane that keeps the crib mattress protector soft and silent, it remains quiet however you little one turns. SKIN FRIENDLY & SOFT & ABSORBENT: Premium 4 layers design differentiate Biloban crib mattress protector from others with only 3 layers. The 1st layer is gentle microfiber for baby's delicate skin. 2nd quilted and absorbent fiber filling for extra padding and support, 3rd breathable moisture-wicking fabric keeps baby warm in winter and cool in summer; 4th waterproof TPU backing serves as a barrier to prevent liquids soaking into the mattress. FLEXIBILITY FIT & EASY CARE: Your crib mattress protector with deep skirt and elastic band guaranteed to fit all 52" x 28" crib mattresses. The waterproof crib mattress protector is totally machine washable and which can be dried in the dryer or by airing. Biloban's LIFE-TIME GUARANTEE: Please trust the quality of our crib mattress protector, we do manufacture our products with extreme care and we're eager for your voice consistently to provide better service and better products, if the waterproof crib mattress protector does not meet your needs for any reason, replacement or money back, no questions asked.