You can add more than one bassinet mattress pad for comfort of your little one. (momandbabylab.com)
If possible, you should get organic bassinet mattresses, they have the same protection as firm mattresses, but have extra cotton fibers to make sure your baby is comfortable. (newmommysplace.com)
I would love to see Lil Helper introduce fitted mattress pad covers for cribs, play pens, and bassinet mattresses as well, since safe and organic products baby sleeping products are so hard to find! (thinking-about-cloth-diapers.com)