Here is an example of a mass building off season chest workout routine from Rich Gaspari and IFBB superstar and Gaspari Nutrition sponsor James "Flex" Lewis. This routine is perfect for the off-season when you are trying to build a lot of muscle mass and where you are eating a tremendous amount of calories, before you eventually start the cutting phase of your training regimen to bring out more detail. It is often much faster to concentrate on bulking and building muscle mass wholheartedly with that one intention and doing it for months and then to concentrate on staying lean after the bulk process is over to strip the fat and reveal the hard-earned muscle than to try to build muscle and stay lean at the same time. While you can do it, if you are looking to build a lot of raw muscle, it will be a slower process. Here is the routine to perform for lots of chest mass:

Incline Dumbbell Presses- 4 Sets for 6-8 Reps
Incline Dumbbell Flyes- 4 Sets for 6-8 Reps
Flat Bench Dumbbell Presses- 4 Sets for 6-8 Reps
Weighted Dips Leaning Forward- 4 Sets for 6 to 10 Reps

Follow the above routine, but remember you've got to have the proper nutrition to go along with it and if you are looking to bulk up and build muscle mass, then you have to get yourself a pre-workout supplement and a post-workout supplement. The best pre-workout supplement on the market is Cellucor's C4 Extreme, which beat out Gaspari Nutrition's SuperPump in our review here: http://www.muscleprodigy.com/the-best-pre-workout-supplements-who-makes-the-list-arcl-1675.html. As for the post-workotu make sure to get a leading whey or hemp protein source in addition to about 150g of maltodextrin or honey. You need fast digesting carbohydrate sources in addition to fast-digesting whey  protein. The more carbs after your workout, the better, because you want to refill that glycogen, especially if you are bulking up.  

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