From the Manufacturer
BOB Duallie Stroller Strides Fitness Kit is a custom handlebar console that includes two exercise tubes of different tensions, one water bottle holder and a fitness manual to help direct you in your total body workout.
Product Description
When you can t get to a gym the Stroller Strides Fitness Kit lets you turn your stroller time into a total body work out Two exercise tubes of different tensions a water bottle drink holder and fitness manual give you the tools to tone your body and improve your outlook on life The Stroller Strides Fitness Kit is standard equipment on all Stroller Strides Fitness Strollers and is also available for use on any other BOB stroller