Shipping to Mexico

I have a wonderful opportunity to travel to Mexico, and am planning on staying 6 months or maybe more. My problem is this. I will need to ship some clothing to where I am staying, (just outside of Mexico City) in order to have what I need for my stay. I have heard the area is dangerous, at times shipments are lost or stolen. Does anyone have any advice as to the best way to ship my property there...It's less than 100 pounds, but will contain items I do not want to lose. Thank you.