Spider-Man Bike (12-Inch Wheels) Spider-Man-themed 12-inch BMX bike with heavy-duty steel frame Pneumatic 12-inch knobby tires with secure training wheels Rear coaster brakes for sure stopping; fully enclosed chain guard Measures 34 x 34 x 18 inches (W x H x D); weighs 21.3 pounds Recommended for ages 2 to 5