These Booster boxing gloves are made of synthetic leather and belong in the Cube collection. The green kickboxing gloves have a padding that contains different layers to give you all the protection you need for your knuckles. The inner lining of the Booster gloves was designed to dry fast and offer ventilation during training. To top it off Booster Fight Gear gave the kickboxing gloves a 7 centimeter wide velcro closure for all the secureness your wrist needs. Furthermore the Booster Cube has an attached thumb. This entails that the thumb is secured to the kickboxing gloves to prevent unnecessary injuries. Booster gloves are suitable for boxing, kickboxing and Muay Thai (also known as Thai boxing). Looking for more quality? Complete your Hayabusa boxing set Mouth Guard Hand Wraps What size of boxing gloves are suitable for you? Oz stands for ounces, this represents the weight of padding in the glove. The general rule is that the heavier you are, the more ounces your kickboxing gloves should be. This is to protect yourself and the people you train with.