Learning Resources Tape Measure Inch and Metric Measuring Tape, 33 Feet Ultrafoam combines the light weight of plastic with the quiet of foam! New injection-molded core for improved action and performance Set includes a vinyl setup mat for proper pin spacing Fitted carrying/storage bag makes put-away a snap! New construction, great price. we not only made one of out most popular bowling sets better, they are more economical too By adding an injection-molded core, we are able to now offer a light-weight set that reacts like the popular plastic pins, but has the great feel and low-noise characteristics of our foam sets