Super fitted engineering. Super Fit Engineering is an exclusive process that guides the fit, design and pattern of each Giro glove for maximum comfort and performance. By carefully adjusting the palm, fingers and padding areas to match hand shape and size, SFE reduces wrinkles and discomfort while improving grip, bar feel and cushioning efficiency. And with so many 6 sizes available per model, almost any biker can fit their needs. 3-part palm construction. Our unique 3 part palm construction adapts to the fit of our gloves to reduce bunching, and allows your hands to move naturally for better control without compromising the barbed feel. By designing each part of the palm to mimic the features and joint of the hand, Giro gloves increase grip and provide a next level of protection for the whole hand.