It is. (Or rather, 50 lbs is; I'm guessing someone rounded down here.) You probably see this most often when traveling: Normal checked suitcases must be at mo

It is. (Or rather, 50 lbs is; I'm guessing someone rounded down here.) You probably see this most often when traveling: Normal checked suitcases must be at most 50lbs. (Typically up to 70lbs is allowed if you pay an extra fee, but the bag then needs a "HEAVY" sticker, which alerts ground crew to handle it carefully to avoid injuries.)