The maximum durability of a Level 3 vest in PUBG is 250.
The Level 3 Military Vest is the strongest standard body armor in PUBG. At full durability, it has 250 durability points, reduces damage to the chest by 55 percent, and adds 50 carrying-capacity points. Its protection applies to the torso, not to shots that strike unprotected limbs or the head.
Durability and damage reduction are separate characteristics. The 55 percent reduction describes how much incoming chest damage the vest absorbs while it remains functional; 250 is the vest’s starting durability pool. As the vest takes hits, its durability falls, and a heavily damaged Level 3 vest may be less useful than a fresh lower-level vest in a prolonged fight.
Players sometimes confuse vest durability with helmet durability. A Level 3 helmet has 230 durability, while the Level 3 vest has 250. Level 1 and Level 2 vests have 200 and 220 durability respectively, so the Level 3 vest has both the highest tier and the largest durability value among the regular vests.