1/4″ Minus Crushed Aggregate is crushed from 1/4″ to 0″. It has fines for compaction which means it will pack in, and is very small so it finished off quite smooth on top. It makes a great garden pathway material because it packs down which allows you to easily push wheelbarrows and lawnmowers across it, but is small enough that you can kneel on it while working in the garden. It is also an attractive light blue-grey in color once is has packed in and the fines have settled. This material is an ADA Compliant pathway material because it is easy for walkers and wheelchairs to roll across.