What's the difference between training, sparring, and bag gloves?

Bag gloves are firmer with denser padding to protect knuckles on heavy bags. Sparring gloves use softer, more distributed padding to protect your training partner. Training gloves try to split the difference. Reviewers across r/fightgear note that 'training' gloves like the Hayabusa T3 and Cleto Reyes hook-and-loop are popular precisely because they're versatile enough for both bag and light sparring.