Teenage Mutant Ninja Turtles the new film from Paramount and Michael Bay starring Megan Fox, Will Arnett and Whoopi Goldberg will open on August 8 and is expected to be the family smash hit of the summer.

For kids who want to take home their very own ninja turtle can try Stretchkins. The fun fitness toys are now available at Walmart and Toys “R” Us. The officially licensed Ninja Turtle Stretchkins will go into stores in all 50 U.S. states from July.

Priced from $19.95, kids can have fun and get fit with their very own Stretchkins, available as Leonardo, Raphael, Michelangelo and Donatello, in addition to the classic Playful Puppy, Pretty Unicorn, and Red Dragon models.

Marvin Azrak, a grandfather of 13, developed Stretchkins to take action against child obesity; “I wanted to create a new type of toy, one that would get my grandkids off their seats, away from their computers and video games, and into action.”

Whether you decide on a classic model or one of the fab four turtle designs, each toy comes with an accompanying ‘Dance and Stretch’ DVD that helps children enjoy happier, more active lives.

Stretchkins come in five fun designs: Playful Puppy, True Blue Elephant, Pretty Unicorn, , Red Dragon and Jumping Frog. The Teenage Mutant Hero Turtles will go on sale in July 2014.

Available online and nationwide in Toys “R” Us and Walmart, each classic design retails at $19.95 while branded designs retail at $29.99, plus any shipping and handling costs.