Hey! So, the FLEX STACK PACK 3-Piece Storage System (FSM1101-3) isn't really advertised as waterproof.

According to what we've gathered, the manufacturer doesn't mention anything about it being waterproof in the product description. They do talk about other stuff, like its sturdy 9'' rubber wheels and a handy removable telescoping handle, which are great for moving it around different job sites.

But yeah, those features don't mean it can keep water out. Being rugged is different from being waterproof.

Rugged means it can handle tough environments, but it won't protect your tools from getting wet in rain or splashes.

If you need something to keep your tools dry, you might want to look at other options that clearly say they're waterproof.

Hope this helps clear things up!