Thule Chariot Cougar 1 Bike Trailer With Jogging Kit, 2013 Model_Kid's Castle Playard "Teach your kids to balance

"Teach your kids to balance before getting on a big kid bike with this bmx style Balance Bike

9 Volt Vehicle Adaptor

Runs on battery power so you can set it up anywhere and keep baby in sight

this might do the trick

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Thule Chariot Cougar 1 Bike Trailer With Jogging Kit, 2013 Model_Kid's Castle Playard "Teach your kids to balanceCondition: Gently Used "The Chariot Cougar 1 is the top of the line travel system when it comes to outdoor family adventures. Delight your children with a bike ride to the park, jog around the neighborhood, hike in the mountains, or a leisurely stroll through the local farmers market. This trailer does it all! Features a roll back weather shield, adjustable handlebar, lightweight frame, safety flag, comfortable seats with padded 5 point harnesses,