Sand-pit sand (Kennington OX1)

I'm decommissioning our sand-pit. I was able to salvage a fair amount of the sand, about three buckets worth, I've sieved it so there's shouldn't be any bits in it but no guarantees! It was always covered with a tarp, so no cat-do. Note this is different to normal building sand and quite a bit more expensive. Buckets not included, you'll need to bring your own!