... polyester resin)l Acrylicl Crystall ResinMaterial Feature(UPR , Acrylic):l Clear transparentl Low density,not heavy than crystal ... TIANMA ARTS&CRAFTS CO.,LTD.MaterialUPR(unsaturated polyester resin)/ Acrylic / Crystal/resinProduct Bathroom accessories,Paperweight,hourglass,trophy,dice,ball ... availableSample time 5-7days , 10-15days if new mold neededProduct lead time20-35 days or according to order ...