Lesko's lab coat

Lesko's lab coat is a unique piece of clothing found in Fallout 3.

Characteristics
A unique variant of the scientist outfit, it is notable for giving the wearer a +10 bonus to the Science skill, the highest Science bonus offered by any article of clothing in the game. It can be repaired with Doctor Li's outfit, Enclave scientist outfit, lab technician outfit, scientist outfit, vault lab uniform and other copies of itself.

Location
This coat can only be acquired by completing the quest Those!. To get the coat, the player must ask Doctor Lesko for "serious incentive" when Lesko first asks the player to kill the brood guardians.