Let me just offer a word of caution--I took boxing lessons for 3 years & while it was a fabulous workout, extremely intense & lots of fun, it has completely ruined my hands. Even with gloves, the first year my knuckles blistered, & after that they scarred, which turned out to be permanent.
It's a real bummer b/c it is such a fun & high intensity activity, but the reality is if you want pretty, feminine hands, stay away from the heavy bag.