Suggestions have been good so far......

Make sure you get wraps and decent gloves.... Do not even bother laying in the the bag one single time without wearing wraps...

Also try to find a bag that has the foam padding around the inside... They do cost a little more i've found, but it's a night and day difference when your training. I traded out my old one for a foam padded one and I can train a lot harder now for longer,,, and my wrists are thanking me for it!! I wish I could get back all those years I pounded away on "the rock" I now call it....