A mallet is a type of hammer, and usually found in the hands of a woodworker - and they come in a variety of shapes and sizes. You can buy them made of wood, rubber, fiberglass, a combination of all three - there's even the odd plastic mallet available on the market.
The size and type depends upon the task they're required for - some are specifically designed for wood carving, others for brute force - such as a dead blow mallet. There are other varieties that can be used in the shaping and refining of metals, or for the purpose of jewelry crafting and similar crafts.
The five best mallets are featured below. They're all well designed, great all round quality and offer the best value for money, as well as being popular and highly rated.