The Star of David is believed to be a way of averting and getting protection from the evil eye, or in general, as a way of summoning assistance from the "Hand of G-d"
Kabala belief explains that the two triangles, interlocked in opposite directions, represent the contradictions in man; good vs. evil, spiritual vs. physical, and so forth.
The upward point triangle symbolizes man's good deeds, which is directly towards to heaven. In turn, it activates a flow of goodness that comes back down to earth, and is depicted by the downward pointing triangle.
Green string Kabbalah bracelets with large Star of David pendant for success, good luck and protection from the Evil Eye.
* 1 "Lucky Eye" Star of David Green String Bracelets for Success and Good Luck
* Each Bracelet Fits All with Easily Adjustable Size