My husband had Tonka trucks as a kid, so when Christmas rolled around for my 18 month old son, my husband insisted on buying him his first Tonka truck. We went for total effect, and bought him the mammoth Tonka Toughest Mighty Dump Truck.
Although this particular truck is for older kids, my son loves it. The dump bed is large enough to put his five year old sister in and push her around. It also doubles nicely as a baby doll bed. The plastic handle at the front of the dump bed makes it easy for his little hands to pull up the bed and dump out blocks, spoons, or his sister's play jewelry.
The wheels on the truck are plastic, but durable, and roll easily on carpet, hardwood or through the grass. This saves a lot of frustration for our little excavator/hauler.
Because the truck is so big, both my son and daughter have figured out that if you lift the dump bed, you can actually sit on the power train and use the truck like a ride on toy. Thanks to its tough Tonka build, this dump truck can easily handle that kind of abuse.
The truck is a mixture of metal and plastic materials, with the dump bed being mainly metal. One word of caution is that the sides and corners on the dump bed are sharp, and could cause injury if fallen on or pushed forcefully against a small child.
In spite of its heavy construction and a few sharp corners, neither my son nor myself are disappointed with the performance of this imagination-friendly toy. Plus, there is much to be said for toys that don't require batteries!