This exercise primarily focuses on traps, but it will also work on biceps and shoulders.
1) Grab a dumbbell with palms facing forward. Have a grip that is slightly less than shoulder width.
2) Have the DBs resting on top of thighs with arms extended and a slight bend at the elbow. Keep back straight.
3) Use the side of your shoulders to lift the weight. Keep weight close to your body. Elbows should be driving the motion. Lift the weight until it's near your chin.
If you have any additional tips for this exercise, please let me know in the comments below and I will add them to this card. :)