This is an AUTHENTIC My Bodybuilding Network Party Rock Gym, Hollywood California Tee. :

By far our most popular tee, this Body Building custom t-shirt is a great, mid-weight, standard fit shirt that will fit any budget. Designing your custom Body Building t-shirt has never been easier.

Product Details:
•6.1-ounce, 100% cotton
•Double-needle neck, sleeves and hem; Roomy Unisex Fit
•Ash is 99% cotton, 1% poly; Sport Grey is 90% cotton, 10% poly; Dark Heather is 50% cotton, 50% polyester
•Decoration type: Digital Print or Screen Print (based on design & quantity)
•Made by Gildan®