RDX X3 6-Inch Weightlifting Neoprene Gym Belt – Back Support Training Belt | Army Green & Black | S–XL

Give your fitness gear a must-have upgrade with the RDX X3 6-Inch Weightlifting Neoprene Gym Belt. Engineered with a spongy neoprene top fabric and SpongeX™ Padding for ideal comfort and flexibility, plus a compressed EVA-LUTION™ Sheet interior for an unbreakable shield against impact. Designed to provide abdominal support during squats, crouches, chest fly, triceps extensions, shoulder press, and other strength training movements. Double-stitched strengthened nylon webbing strap with Hook and Loop closure, heavy-duty iron buckle, and Tension Lock for a snug, secure fit through any training session. Available in Army Green and Black | S–XL.

• Spongy neoprene top fabric and SpongeX™ Padding for ideal comfort and flexibility during training
• Compressed EVA-LUTION™ Sheet interior for an unbreakable shield against impact
• Heavy-duty iron buckle with Tension Lock — Anti-Open Closure system keeps the belt locked in place under high stress
• Hook & Loop closure with durable nylon strap for extra security and adjustable fit
• Contoured to the shape of your abdomen and back for superior comfort during intense training
• Available in Army Green and Black | S–XL

Frequently Asked Questions

What is EVA-LUTION™ Sheet and how does it protect the back?

EVA-LUTION™ Sheet is RDX's compressed EVA foam padding used in the interior of this gym belt. Compressed EVA foam maintains its structure under sustained pressure — unlike standard foam, it doesn't collapse or lose its shape during a training session. The EVA-LUTION™ Sheet acts as a rigid internal layer that holds the belt's form against the lower back, providing consistent support and distributing the intra-abdominal pressure generated during heavy lifting evenly across the lumbar region.

What is the Anti-Open Closure system?

The Anti-Open Closure mechanism is a secondary locking feature on the X3 buckle that prevents the closure from releasing under tension during a lift. It adds an additional engagement point that locks the buckle in place regardless of the direction of force applied — particularly important during heavy squats and deadlifts where abdominal pressure pushes outward against the belt throughout the movement.

What exercises is the X3 belt designed for?

The X3 6-inch neoprene belt is designed for squats, deadlifts, Romanian deadlifts, bent-over rows, shoulder press, chest fly, triceps extensions, and other compound or accessory exercises where lower back support is beneficial. The flexible neoprene construction makes it comfortable across a wider range of exercise types than stiff leather belts, which are primarily suited for maximum-effort bilateral lifts.

How do I size the X3 belt?

Measure around your waist at the navel. Select S, M, L, or XL based on your measurement and verify against the RDX size chart before ordering. The Hook & Loop closure provides adjustability within each size, but the belt should engage across the middle of its adjustment range for optimal fit. If the closure is at its maximum tightness, size down; if at its loosest, size up.