Pros:
-Insane ganks
-Fast Camp Cleaning
-Tank enough to kill the main damage in teamfight
-Insane farming with Trinity Force and Hydra

Cons:
-Have DMG but not the best
-Tanky to take DMG but can die

Runes for Lee Sin jungle:
-2 Movementspeed Quints are very important for the ganks
-You can use Armot quint instead of the AD
-I recommend armor seals and mr glyphs

Here are the abilitys for Lee Sin:
This is Lee's passive, the Flurry. After you casted an ability you have extra attack speed for the next two basic attack. Always use your passive between two abilities.

Lee Sin's Q:

1st cast:

This is Lee's gap closer. If you hit an enemy, you can jump to him with the 2nd cast. Always max this.

2nd cast:

After you hit an enemy with Q, cast again.


Lee Sin's W:

1st cast:

This is a shield. You can use it for yourself or you can jump with it to allied units.

2nd cast:
Lee Sin will have increased lifesteal.


Lee Sin's E:

1st cast:

Lee Sin hit the ground and deal AOE (are of effect) damage.

2nd cast:

Enemy units who had been hit bye E, will be slowed.


Lee Sin's R:


Lee Sin's ultimate: Lee kick away 1 enemy. The kicked enemy can hit her/his allied units and dealing pshysical damage.