What Does a Lifting Belt Do?
A lifting belt works by giving your core something to brace against. When you take a deep breath and push your core outward into the belt, you create intra-abdominal pressure — a rigid cylinder of support around your spine that dramatically reduces the shear forces on your lower back during heavy squats, deadlifts, and overhead work. This isn't just about protecting your back. It actively makes you stronger by giving your core a solid base to produce force from.
The research backs this up: lifters using a belt consistently demonstrate higher peak force output and lower spinal compression compared to beltless lifting at equivalent intensities. The belt doesn't do the work for you — you still have to brace correctly — but it gives you more to brace against and keeps your technique honest under maximal loads.
Lever Belt vs Prong Belt — Which Is Right for You?
The lever belt is the standard choice for powerlifting and anyone who squats or deadlifts heavy regularly. You set the lever once with a screwdriver to your exact waist measurement, and from that point every set is the same tightness — locked in instantly, released with a flip of the lever. No variation between sets, no guesswork. Iron Bull lever belts come in 10mm and 13mm, IPF approved, and are the belt our competitive lifters use on the platform.
A prong belt — single or double prong — gives you more adjustability. You can tighten or loosen between sets without a screwdriver, which makes it useful for sessions where you're doing varied rep ranges or moving between exercises. Single prong is faster to use, double prong locks in more securely. If you're new to lifting belts or train across multiple disciplines, a prong belt is a practical starting point before committing to a lever.
Leather Lifting Belts vs Nylon Lifting Belts
Leather lifting belts are stiffer, more supportive, and the choice for maximum-effort powerlifting and strength work. The rigidity of leather is what generates the intra-abdominal pressure that makes a belt effective on heavy singles and low-rep sets. Our leather belts use top-grain leather with double stitching throughout — built to outlast years of heavy training without losing their stiffness.
Nylon lifting belts are lighter, more flexible, and easier to move in. They're the right choice for CrossFit, Olympic lifting, high-rep accessory work, and any session where you'll be transitioning between movements quickly. A nylon belt provides meaningful core support without the restriction of leather, making it comfortable for longer sessions and dynamic movements.
10mm vs 13mm Lifting Belt — Which Thickness Do You Need?
10mm is the right starting point for most lifters. It provides excellent support, breaks in faster, and is more comfortable for a wider range of movements. Our 10mm lever belts are IPF approved and are the most popular choice in our lineup for both training and competition.
13mm is the maximum thickness allowed under IPF regulations and delivers the stiffest, most supportive option available. It takes longer to break in and is less forgiving on your hips during low-bar squats, but once broken in it provides more rigidity than any 10mm option. Serious powerlifters who compete regularly and prioritize maximum support over comfort choose 13mm. If you're unsure, start with 10mm.
Lifting Belts for Women
Belt sizing is based on waist circumference, not gender — but women typically need smaller sizes than men at the same bodyweight due to proportional differences in torso length and waist measurement. Our women's lifting belt is cut specifically for a shorter torso fit and comes in sizes designed for waist measurements that standard men's belts don't cover well. The same IPF-approved construction, the same quality leather — just properly sized.
Women competing in powerlifting or training seriously in the squat and deadlift benefit from the same belt choice as men: 10mm lever for competition, 7mm or nylon for general training and dynamic work.