The Blackburn 20" Kids Bike Tire features a tall, knobby tread pattern for superior traction. Designed to be keep them moving forward on most terrain, your kids will enjoy their ride no matter the riding conditions. Blackburn kids bike tires also feature carbon steel beads for extra safety and tire strength. They are extremely durable and built to stand up to the elements. Conveniently, these tires fold and unfold without damage, making them easy to transport and store away. Blackburn tires are ultra-durable and made for adventure. These tires will stand the test of time, ride after ride.