Our Upcycle prep bowls are a colorful nesting trio crafted with a durable composite of renewable bamboo fiber, coffee grounds and cornstarch. Strong yet lightweight, their environmentally conscious construction is lovely in luminous dragonfly blue, sage-green and lavender hues. Handy for mixing ingredients, whipping batters and preparing sauces, their soothing colors won't fade in the dishwasher and they store together neatly in small kitchens.