One of the meanings of the hamsa is good fortune.   The charm is 11 x 18mm and slides along a 3mm sterling silver stretch bracelet. 

The standard size of our bracelets is 6 3/4" and are designed to fit slightly snug on the wrist and not extend to the hand. Measure the exact circumference of your wrist with a piece of string and add 3/4" to determine sizing.