The Stair Stepping Smarter Cart – A collapsible cart with 3 tires on each end so it can move up and down stairs effortlessly
The Stair Stepping Smarter Cart [SOURCE] is a foldable cart that uses 3 uniquely designed tires on both end so it can roll up and down the stairs effortlessly allowing the owners to easily transport loads of up to 100lbs. The Stair Stepping Smarter Cart Unlike ordinary 2-wheeled handcarts out there, this stair stepping smarter…