Strider - Heavy Duty Wheel Set, Alloy Wheels and Pneumatic Tires EXTEND THE LIFE OF YOUR CHILDS BIKE: As your child grows, this accessory will help accommodate their growing needs and extend the life and use of their Strider 12 Balance Bike. Due to the added weight of the tire, this accessory is recommended for advanced/advancing riders ages 3 years and up. DESIGNED TO PROVIDE EXCELLENT TRACTION: These 12 x 1.75 heavy-duty, high traction, all-surface treads, inflatable tires feature: steel hub and spokes, strong alloy rims, and weigh 3.6lbs per pair. One pair of wheels is included in this purchase. HELP INCREASE SKILL DEVELOPMENT: If your young rider is ready to increase speed and traction, then these heavy-duty pneumatic wheels are the ticket to help encourage and guide them in their developing skills, strength, and comfort on their Strider 12 Balance Bike. VERSATILITY: This wheel set is designed to fit all Genuine Strider 12 models (Classic, Sport, or Pro) ONLY. The recommended rider weight limit is 60lbs and under. JOIN THE STRIDER FAMILY: Strider offers a sense of community that has transformed the experience of learning to ride a bike free of the fear of falling and the frustrating option of learning how to operate pedals. Strider hosts events such as Camps, Adventure Zones, and the Strider Cup.