Harbinger Power Glove StretchBack (M) - 2 glove have StretchBack Lyrcra that extends across the back of the hand as well as between the fingers to increase flexibility, comfort, and fit while offering improved breathability. They have wrist closures that can be adjusted to ensure a proper fit. The thumb is reinforced, the palm has a double layer of leather, and the fingers are backed with foam so they will be protected from abrasions during training. The short finger length provides a natural feeling and allows for more contact with the lifting surface. These are great performance gloves that are economically priced.