The sentence you wrote is mostly correct but can be improved a little for clarity and correctness.
Original sentence:
Boxing gloves keep the boxers’ hands safe and soften their punches.
Corrected sentence:
Boxing gloves keep boxers’ hands safe and soften their punches.
Explanation:
- We remove "the" before "boxers’ hands" because we are talking about boxers in general, not specific boxers.
- The rest of the sentence is clear and correct.
So the improved sentence is: "Boxing gloves keep boxers’ hands safe and soften their punches."