Here's what it looks like....For reference....1000 balls, 62x5,62x5,19.5 Swim Center Aquarium pool sold by Sun World
1000 Count Soft Plastic Colorful Pit Ball and 14 similar items
Amazon.com: Ball Pit Balls 1000 for Toddler 1-3 Play Plastic Balls for Ball Pit BPA Free Crush Proof Pit Balls 1000 Count for Baby Ball Pits, Bounce House, Pool Water Toys, Play
Click N' Play Ball Pit Balls 1000 Pack | Bulk Size 1000 Balls - Walmart.com
Big Ol' 1000 Pk Big Ol' Ball Toyz 5.5 cm Soft Touch Fun Ball Pit Balls Phalates Free - Walmart.com
1000 Pit Balls - TeddyCounty
Amazon.com: Kids Ball Pit Balls 1000 Count for Toddler, 1000 Plastic Balls for Ball Pit BPA Free Crush Proof Phthalate Free Pit Balls 1000 for Baby Ball Pit, Pet Play and Children