Is the fine grade river stone safe?
Yes. You may have read on another site that it is porous, that it won’t dry, that it is sharp and will wear out the blanket, that it will mold and other things. With all due respect to the author of that site, none of this is true. Fine grade river stone is just that. It is natural, clean, smooth and certainly not porous. But if you prefer polybead, it is a good product too and we will use it at your request.