Hello. I'm Chuck Stover and I create dice. All of the dice in the shop are available in a variety of materials, but they are designed for stainless steel. They look fine in plastic but are very light. Stainless steel has the heft to roll correctly and feel right in your hand. For an image comparing the sizes of each of my sets to a standard plastic dice set, click here. Please contact me at firstname.lastname@example.org with any questions you may have.