Sly Inc., which was inspired by the star's legendary on-screen characters Rambo and Rocky Balboa, will consist of jeans, shirts, outerwear, underwear, and watches.
Stallone tells Men's Week magazine, "I thought the time is now. I've lived a life where I know what has worked and what hasn't worked. Clothing is the first step to building a character."
The actor, who will launch the lifestyle brand next year (12), eventually hopes to expand the line to include eyewear, grooming products, athletic wear and even a fragrance.