Perfect fit Precise size Perfect compare with Moses Basket, Dream On Me Lacy, Snoo, Fisher-Price Baby Bassinet. The bassinet mattress measures 30" x 15" x 1.5' Please measure your bassinet to ensure a perfect fit. Dual Firmness The mattress has dual firmness, it can provide fitted support for your baby The firm side is made of high density foam , and softer side is made of gel memory form. Waterproof cover Bassinet mattress cover is made of high quality TPU waterproof membrane that Effectively preventing liquid Spills & Nighttime Accidents. Machine Washable The bassinet mattress pad cover is made from 20% Viscose made from bamboo and 80% microfiber, ensuring it is machine washable for easy maintenance. It boasts a low hypoallergenic quality, providing a soft and breathable surface for your baby's comfort.