A more thorough explanation:

An implied warranty of fitness is a legal term that means when a buyer asks for a product for a specific purpose, the seller guarantees that the product is fit for that purpose. This warranty is covered under the Uniform Commercial Code §2-315.

For example, if a farmer goes to a farm supply store and tells the salesperson that they need a plow for their rocky soil, and the salesperson recommends a particular plow, there is an implied warranty that the plow is fit for use in rocky soil. If the plow does not work well in rocky soil, the seller may be liable for breach of warranty and may have to pay damages.

Another example could be a person buying running shoes for a marathon. If they tell the salesperson that they need shoes for a marathon, and the salesperson recommends a particular pair of shoes, there is an implied warranty that the shoes are fit for running a marathon. If the shoes fall apart during the marathon, the seller may be liable for breach of warranty and may have to pay damages.

These examples illustrate how the implied warranty of fitness works. It is important for sellers to understand their customers' needs and recommend products that are fit for those needs. If the product does not work as intended, the seller may be held responsible for any damages that result.