If you look along the side of the bags, it looks like:
Something/Something Base Step 1
Patio/Paver Base Step 1
Use as filler or to build up project area 3” to 4”
Cover with 1” of Leveling Sand
Use when building patios, walkways or pool decks
Looked on Lowe’s website, theirs shown is another bag, but could he have bought elsewhere, Home Depot, Wal Mart....