These skulls are made and molded from 3D printed scraps, support material, failed prints etc. These are solid PLA material, not resin. In the true spirit of repurposing and minimalizing plastic going in the garbage, we have created these patterned skulls that measure 3.5"H, 4" front to back and 2.5"W and weigh about 13oz! Each one is unique as the scrap pieces used for each are different. Truly a one of a kind piece.