With two large tub shelves that are 2.5" deep, this multipurpose utility cart easily holds and hauls a wide range of items and is designed to carry heavy loads up to 400 lbs. (200 lbs. per shelf, evenly distributed). The tub shelves are made of a high-density polypropylene, known for its incredible strength-to-density ratio, which assures that each cart is durable without being bulky or cumbersome. Easily guide the cart across indoor and outdoor environments using the ergonomic push handle and full-swivel casters; simply engage the two locking brakes when you need to keep the cart stationary.