{SKILL LEVEL TWO - See "Skill Levels" at left}
This little envelope contains the "stuff" that makes things float. Ever seen anyone make a playing card "fly" around them? This is the "stuff". Yep, it's invisible thread.
If you know what it is and how to use it, this is the least expensive way to buy it. If you don't know what this is then you probably don't need it.