Usage Tips:Constructed from high-quality, thickened rubber, this tire boasts a thicker sidewall than standard thin tires, significantly improving wear resistance. It's less susceptible to wear and cracking on common surfaces, such as concrete and gravel.Built to a strict 60x230 specification, the inner and outer tires are precisely matched, perfectly fitting most strollers, tricycles, and strollers of the same size.The tire's deep, anti-slip pattern enhances grip, effectively reducing the risk of slipping even on wet, rainy roads or smooth tiled surfaces.Optimized for stroller use, the thickened rubber and sturdy tire structure provide excellent load-bearing capacity, easily supporting the weight of children of all ages and the vehicle itself.Supplied as a complete set, the inner and outer tires eliminate the need to purchase separately; they can be replaced and installed right out of the box. The inner tube is airtight and inflated, making it highly leak-resistant.