Schwinn Astrid 20" Wheel for Youth Bike NEW Item Description: 20-inch wheels fit riders 48 to 60 inches tall. Tool-free adjustable saddle allows the bike to grow with your child. Measurements: Wheel height: 20" Tire Width: 1.95 Inches Condition: New Please see all pictures for style, color and condition and remember that colors can vary from screen to screen. Thanks for looking!