A mala can consist of a string of 108 beads, 54 beads, 27 breads 21, beads or 19 beads which is used to count mantras in silence or aloud. A mantra is a word or serie of words chanted as a form of meditation. By using the method of repetition the mind gets focused on the mantra and slowly the thoughts are let go of. When selecting a mantra one should be clear of the intentions and it's also recommended to use a new mala with each mantra if possible.
There are many different malas to choose from but always follow your intuition and you will wear one that can help you on your spiritual journey!