Hey! So, the FLEX STACK PACK 3-Piece Storage System has three boxes, each with their own specific dimensions. I got the details from the manufacturer's product description, so here’s the breakdown for you:

• Rolling Tool Box: This one’s the biggest. It measures 22.8 inches tall, 15 inches wide, and 20 inches deep.

• Medium Tool Box: More for medium items. It's 13.6 inches tall, 15 inches wide, and 20 inches deep.

• Small Tool Box: Great for smaller stuff. Dimensions are 6.7 inches tall, 15 inches wide, and 20 inches deep.

Each box interlocks with the others using an auto-connect system, which makes stacking them up really easy and secure.

From our research, it’s clear that people love the gas strut lids in the medium and rolling boxes because they hold the lids open, which is super handy when you're busy with both hands.

As for durability, this system has IP65-rated all-weather protection, meaning it can handle pretty rough conditions.

It’s also got an impact-resistant body with aluminum corners, so your tools should stay safe. The whole setup can carry up to 500 pounds, so it's definitely built to handle some heavy-duty work.

Hope this helps!

Stacking and unstacking the FLEX STACK PACK 3-Piece Storage System is pretty hassle-free.

It's designed to be easy to use whether you're a pro or just need something solid for home storage. The manufacturer mentions that it comes with a Rolling Tool Box with big 9-inch wheels, so you can roll it over different surfaces without much trouble.

The telescoping handle can extend to help you navigate it better, plus you can remove it when you need to store it in tight spaces like a covered truck bed. This makes it really handy to move around and store when you're done.

Our research shows that people find the stacking feature pretty user-friendly. The cases snap together securely, keeping your tools organized and safe, whether you're moving them around or just storing them.

One cool thing is that it fits well in the back of an SUV, which makes it super convenient for taking to different job sites.

Thanks to its sturdy wheels and handle, folks appreciate how easy it is to transport.

It's a solid choice for anyone who needs to move tools frequently between locations, as well as for those who need a flexible storage solution at home.

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!