The Dakota Dash 3.5 with Dakota Guard Antimicrobial is an excellent way to keep your pet's water stores mobile. Originally designed for hunters, this portable water bowl holds up to 3.5 gallons of water. To use the unit, lift the handle end and remove the rubber plug. There's a small recess to store the plug on the bottom of the container when not in use, so your dog won't chew it. When the Dash 3.5 is on the ground with the plug removed, the bowl area will fill with water. When the dog starts drinking, water will continuously backfill to ensure they don't run out. When it's time to go, tilt the unit up to return leftover water inside the carrier and push the plug back in place. It's great for trips to the woods, field, vacation or even as a regular water station at home. The Dash 3.5 is designed with the same process as military cargo cases and industrial tanks, so it is tough. Toss it in the back of the truck without worry that it will crack or break. The Dash 3.5 polyethylene plastic construction is not only durable but safe. The water bowl is both BPA-free and FDA approved for contact with edibles. Dakota Guard is an FDA and EPA-approved additive that is included in small quantities during a product's production. This results in DAKOTA 283 products that protect your pet's health and safety from the invisible world.