The Eva Solo herb grinder features a grip-friendly handle made from a blend of 50% plastic and 50% wheat fibre. With its smart and innovative design, the herb grinder is easy to use and nearly effortless to clean. Fill the lower section with any spice you wish and then turn the handle back and forth to grind it to your desired texture. The innovative composite material makes every piece in the Green Tool collection an environmentally-friendly and sustainable choice.