TECHNOLOGY: Motion activated lights start to glow RGB colored lights as they pedal FEATURES: Adjustable training wheels help fit a variety of youth bikes Bright lights add style and flair that get your kids excited to ride their bike Thick training wheels provides superior stability keeping the young learner safe Easy do-it-yourself assembly delivers a frustration free set-up Lighted training wheels also provide enhanced visibility at dark Recommended age of 3 and up SPECS: Product Weight: 2 lbs. Best Bike Fits (Wheel Size): 12" - 20" Weight Capacity: 198 lbs. Size: 4" training wheels