Packet dimension : 1 1/2 " x 1 5/8 ", Silica Gel Beads Size : about 1 ~ 3 mm, High Quality Pure Silica Gel without Cobalt Chloride, Packet Material is High Quality Coated Paper for "Ultimate Moisture Absorption" and meets for specifications for food and medications products, Packets come in re-close-able stand up foil pouch bag for easy storage and use.