Does anyone know where I might be able to purchase bands for hair that are not latex? I don't tie them very tight but I know it still hurts them, and because it is not tight, they come loose very easily on my babies head or when they shake and roll on the floor, it comes loose.

One of my friends gave me a few before but now she said she cannot even find them anywhere. I searched online but no luck so I thought of posting here for some help. Or if anyone can recommend something that will not hurt them.
Thanks,