1,made of acrylic. 2,reasonable price 3,DIY dwawing welcomed High level of transparency(above 95%)Durable in any conditionsHigh strengthHigh quality Size:all kind of size is availbleShape:most of the shape:square, ball,cylinder,pyramid and so onThickness:20mm-500mmMaterial:100% virgin MMA from LuciteTechnology:Hot bending,splicing with raw material,polishing and mould making.