When it comes to describing that certain something which is "fits for" a particular situation, a person might look for synonyms that capture the essence of suitability or appropriateness. Some options could include describing something as "ideal" or "perfect" for a given purpose, or pointing out that it "meets the requirements" or "fulfills the needs" of the situation. Creative descriptions might suggest that a certain object or action is "tailored" or "customized" for the task at hand, or that it "matches" or "complements" other elements in a seamless way. Whatever your choice of phrasing, the key is to convey the notion that something is just right for the situation at hand.