Grow fresh, nutritious sprouts year round in just 2-4 days! No need to soak your seeds first, simply place the seeds in one, two, three or all four clear trays and add the white base tray to collect the excess water. Rinse twice daily and soon theyll be ready to add to salads, sandwiches and even soups. Simple, fun and best of all, nutritious. A 1 oz. package of alfalfa sprouts is included to get you started. Overall height is 8 and trays are 6 in diameter. Made in the USA of BPA-free polypropylene.