Ne vem od kod si, ampak tole, od granulacije recimo 30 mm dalje bo kar primerno:
https://www.google.si/search?q=savski+pesek&biw=1344&bih=784&tbm=isch&tbo=u&source=univ&sa=X&ei=kWSSVPamGIjXyQPO7oGYCg&ved=0CEMQsAQ
https://www.google.si/search?q=savski+pesek&biw=1344&bih=784&tbm=isch&tbo=u&source=univ&sa=X&ei=kWSSVPamGIjXyQPO7oGYCg&ved=0CEMQsAQ