Thumb Attachment

Some gloves have a thumb that sticks out more whereas others have the thumb hidden and out of the way. Most fighters prefer a straight-thumb design like Winning (more comfortable) over the curved-thumb design like Reyes (known for many complaints). Most thumb design problems are when the thumb is too small, curves uncomfortably, too stiff (trapped feeling), or doesn't let you make a comfortable fist.

You should also beware of glove models that don't have an attached thumb, it's easier to injure your thumb or poke an opponent's eye out using them. Unattached thumbs are not common anymore but do exist in some old-school models or MMA/kickboxing gloves (for clinching purposes).