Material: Made of high-quality aluminum alloy, safe, stable, non-irritating smell, solid structure, not easy to damage, can serve you for a long time. Size: 3 pieces, each piece is about 12.1 * 1.4cm/4.76 * 0.55in.. Very compact and easy to carry. Advantages: The tight rubber O-ring seal on the cover makes it have good air tightness and water tightness, so as to protect your articles from moisture and water, keep them dry and fresh, extend their shelf life, and give them the best protection no matter you are at home, on holidays, traveling, camping or any outdoor activities. Easy to carry: Our portable container has a key ring at the top, so you can put it in your pocket or hang it on your handbag or backpack for traveling at any time. In daily activities, there is no need to worry about any collision or accidental fall. Widely used: Our metal storage box is airtight, waterproof and odor-proof, which is very suitable for storing a variety of items, such as candy, spices, coffee, herbs, medicines or any other items susceptible to moisture. It will be a good assistant for your travel.