If you’re hit by an attack roll made with a Ranged or Thrown weapon while wearing these gloves, you can take a Reaction to reduce the damage by 1d10 plus your Dexterity modifier if you have a free hand. If you reduce the damage to 0, you can catch the ammunition or weapon if it is small enough for you to hold in that hand.
RollQuest summary Reaction when hit by a Ranged or Thrown weapon: reduce the damage by 1d10 + DEX mod (free hand needed); catch it if reduced to 0.
RollQuest ships the D&D 2024 SRD as a content pack, on a 5e character sheet that does the maths - roll from the sheet and let the numbers work themselves out. Free to start.