Full grain leather is the strongest, most durable, and highest quality grade of leather. It comes from the outermost layer of the hide and retains all the natural grain. Full grain leather belts develop a beautiful patina over years of wear. Genuine leather, despite its name, is the lowest quality grade of real leather. It is made from the leftover layers after the top-quality grades have been removed and is often coated with synthetic finishes. A full grain leather belt will outlast a genuine leather belt by many years. All Leathershire belts are made from full grain or top grain leather only.

Leather weightlifting belts are generally considered superior to nylon alternatives for heavy compound lifting such as squats and deadlifts. Leather provides a rigid, unyielding surface that creates greater intra-abdominal pressure is the key mechanism by which a lifting belt protects the lower back and spine. Leather belts also conform to your body shape over time, becoming more comfortable with use.For powerlifting and heavy strength training, a full grain leather weightlifting belt is the professional's choice.

A new full grain leather belt will naturally stiffen at first. To break it in comfortably: wear it daily.The warmth and movement of your body will soften and flex the leather naturally over 2–4 weeks. You can also apply a small amount of leather conditioner and flex the belt gently by hand. Avoid soaking it in water to speed up the process.