This is a large terrarium with a flat bottom that is perfect for table-side accents, centerpieces, or gifts. Add your sand, stones, moss, seashells, starfish, and air plant to make a tiny ecosystem. This listing is for just the large glass. The glass large orb measures 5 inches tall and 5.5 inches in width. There are two openings on opposite ends so you can easily arrange your new designs. Medium to large air plants from our Specialty page look great inside this terrarium.