Bike gloves is made of elastic lycra and durable knitted fabric which is breathable and comfortable to best fit your palm. Specially designed to support all sports lovers with most snug compression. The size is measured by circumference of the palm below the knuckle area. Pls choose the right size. Size of this glove is Large which ideally fits for people with 8 - 9 inch size of the Palm Adjust Biking gloves tension to your personal needs by sticky Velcro Buckle.