From Magna-Tiles®, this expansion set features: recommended use for ages 3 and up 2 wheeled chassis Designed for little hands, kid friendly shapes magnetically connect with a "click" STEM approved: encourages development of math, science, spatial, color and shape recognition, tactile and fine motor skills and problem solving methods sonic welded with stainless steel rivets these magnetic pieces are scratch resistant and suitable for adventures inside or outdoors constructed with food-grade ABS (BPA-free) plastic without any phthalates, latex, or other toxic materials Package weight: approx. 10.5 oz / 297 g Package measurement:  7.5 x 3.5 x 10 inches Item measurement: base of car measures 3 x 6 inches (the size of 2 small squares) Compatible with all Magna-Tiles® Imported.