With its sleek lines and expanded surface area the Chef'n SleekStor VeggiSteam Silicone Steamer is a steaming revolution. It has a silicone body with a nylon core; it is 650°F (340°C) heat resistant! It will not stain or retain food tastes and odors. All VeggiSteams are top rack dishwasher safe and safe to use in the microwave. Arugula color. 8.5-inch in diameter. Made by Chef'n. Chef'n began twenty years ago based on the principle that kitchen products could be a lot smarter, easier and more fun. Right from day one, Chef'n found an audience hungry for its brand of Tasteful Ingenuity. Today that legacy lives on with the precision refinements to acclaimed inventions, new technologies, design techniques, and entirely new products.