What size boxing gloves for a 14 year old?

I am a 5'5" 110 lb 14 year old and i am wondering what size (oz) boxing gloves would be right for me? I am looking for a heavy bag pair of boxing gloves, not sparring gloves. Thanks!|||any that fits|||i say a 12 or 14 im around your weight and i use 12oz go for 14 or 12.|||A good pair of 12 oz. with velcro strap closure for easy on/off feature.