So glove sizes varies depending on the weight of the user, the heavier the person the more heavier the gloves must be to protect others during sparring, but lets say as example i weigh 86kilograms right now, i would use 10 oz gloves for bag work to get some feel when punching the bag and staying protected, sometimes i use 5 meters of wrap on my hands when i hit softer bags, but during sparring i have 16 oz gloves to protect others and my hands. so conclusion the heavier you are the bigger gloves u need so i would say use 10 oz gloves for bag work, and 16 oz during sparring. link for the gloves so you can buy pair for yourself! https://temu.to/k/ejyqhfux1jr