Home of Flex Fitness Apparel and our on-line Supplements Store

Flex Fitness Gymwear and Apparel

Flex Fitness is recognized among the iconic, independent, weightlifting gyms on the planet.


Show your #TeamFLEX pride with our tough and stylish gym wear.


Check our classic physique designs which celebrate the resurgence of the roots of bodybuilding where aesthetics triumph over muscle mass.


Enjoy our creative and expressive designed T-Shirts, Tanks, Hats, and more.


Shop at Flex, Click’n’Pick up at Flex, or Shop on-line and we’ll Ship em to you!


Designed and Printed in Michigan, using socially responsible vendors and fabrics sourced from the USA as much as possible.


You’ll love our new Michigan Muscle and Classic Physique lines!

On-and-Off Line Supplement Store

FLEX sells more Supplements than any other Gym in Michigan.


You don’t have to be a Gym Member to access our complete Store. (don’t know why you wouldn’t wanna be, but this paragraph isn’t about that!)


Shop in-house from our stock or shop on-line with our Click ‘n’ Pick fast and free service. Order every weekday by 2pm and pick up your order the next day with No Shipping costs!


Optimum Nutrition, Blackstone Labs, BSN, NuBreed, Cellucor, Cytosport, Ntel Pharma, MetRX, and more.


We price compare well against the biggest on-line stores and the national retail chains.


Pre-Workouts, Proteins, MRPs, Bars and RTDs, Vitamins, Aminos, Pro-Hormones, and more all in stock or next day delivery.


Yes, we can ship Orders as well!