these be not professional grade glove . so do not let the `` pro style '' description fool you . they work fine for aerobic or cardio-boxing\/kickboxing , however they be not for heavy contact use during long-term training . during high level of heavy bag training they fall apart quickly . figure on spending no less than $ 70 - $ 120 for better glove that can take heavy training on bag and sparring . higher-end glove also protect you hand more effectively .