Barabel Microbe Armor

vest initially gives +1D to resist damage from blaster attacks to front and back torso. With each subsequent hit by a blaster bolt, the vest goes up by one pip (+1D, +1D+1, +1D+2, +2D, etc.) up to a maximum of 3D. The vest drops by one pip for every three minutes the vest is not hit by a blast. If a blast penetrates the vest enough to allow the user to be wounded, the vest is destroyed. If exposed to below- zero temperatures for as little as 15 minutes, the vest is destroyed.