If you're unsure about size, it is always better to opt for a pair of hiking gloves that are slightly too big than too small. It's important to wear suitable clothing. The body produces heat during exercise, which is preserved thanks to the thermal insulation of the outfit. If your clothing is unsuitable, the body will get colder and blood flow to the hands will drop in order to retain heat in the central core. Your gloves and clothing should therefore be specially made for this purpose.