Protect baby’s sleep space with the Soma Waterproof Mattress Cover—a soft, quiet layer designed to handle little leaks and big peace of mind. Fully waterproof yet breathable, it helps keep the mattress fresh and dry without trapping heat, so your baby stays comfortable all night. With a secure fit made specifically for the Soma Smart Bassinet mattress, it stays smoothly in place for safer, fuss-free sleep and easy changes in the moment.