Pig Wheels新近推出多款Core系列滑板轮，包括：Street Core, Park Core和Street Cruiser core，这一系列产品的概念是用塑料核心替代传统的聚氨酯材料，以减轻滑板轮的重量。
Pig Wheels offers various cored-wheel options for various types of skating. The idea behind having a plastic core in a skateboard wheel (instead of solid urethane) is to make the wheel lighter, because plastic is less dense than urethane. 
