SMAI Boxing Gloves, unless specified as ‘Kids’, are all intended for adult use. Unless you have an exceptionally large hand circumference (greater than 9.5”) you should be able to comfortably insert your hand with wrap into any SMAI boxing gloves.
The Gloves are labelled as 8oz, 10oz, 12oz, 14oz,16oz which is a reference to the actual weight of the boxing glove. So a heavier weight will result in a slightly larger glove size.
You may also want to use Hand Wraps to help protect your hands and wrists from injuries.
How to choose the right boxing glove?