You use heavy gloves in training so as not to hurt your hands hitting the heavy bag, and also, so that you and your sparmate don't hurt each other that much in sparring. Heavy gloves mean thick padding, and that means more protection.

The gloves are used to make the 8 or 10 oz. used later in a bout feel like lightweight bag gloves. 20 oz. for a 110.pounder is way too much IMO.

I would say use the gloves you use in actual matches. Use the gloves for training speed, precision, and endurance. Use weight for strength and power.

Increased strength and stamina in the arms, shoulders, etc.

I'm not an expert but if you use gloves that are too heavy, it may affect your boxing style.

The main benefit is better protection for your hands.

i want to buy these 20 oz ringside gloves and i want to know what the benefits are, i currently train in 16 oz. also do you think 20 oz is too big for me? im around 5'5 and weigh 110lbs.