RDX RX4 Weightlifting Belt – EVA Curved Back Support Gym Belt | Black & Gray | S–XL

The RDX RX4 Weightlifting Belt provides unparalleled back support, stability, and performance enhancement for lifting sessions. A polyester mesh exterior combines with thick EVA foam padding for effective lumbar support and injury prevention when loading heavier weights. Spongy Blacktop fabric inner lining adds comfort and breathability during extended sessions. Nylon straps, a sturdy iron buckle with plastic roller/tension lock, and hook-and-loop closure deliver a secure, adjustable fit. Available in S–XL — suitable for both men and women.

• Polyester mesh exterior for a durable, lightweight build
• Thick EVA foam padding for back support and injury prevention under load
• Spongy Blacktop fabric inner lining for comfort and breathability
• Sturdy iron buckle with plastic roller/tension lock for a snug, adjustable fit
• Hook-and-loop closure for additional security during heavy sets
• Nylon straps for superior support | Available in S–XL | Black & Gray

Frequently Asked Questions

When should I use a weightlifting belt?

Weightlifting belts are recommended for maximal or near-maximal compound lifts — squats, deadlifts, overhead press, and Olympic lifts — where intra-abdominal pressure support becomes critical for spinal safety. They are not recommended as a substitute for developing core strength in everyday training. Use the belt for heavy sets (above 85% of your 1RM) and work on bracing technique without the belt at lighter weights.

What is the difference between the RX4 and RX5?

The RX4 uses polyester mesh fabric with EVA foam and a single nylon strap closure. The RX5 uses premium polyester fabric and is designed as a double belt for additional back stability during squats and deadlifts, making it the better choice for heavier compound lifting. Choose the RX4 for general gym use and moderate lifting; choose the RX5 for powerlifting-style maximal loads.

How do I size a weightlifting belt?

Measure your waist at the navel level — the widest part you typically wear a belt. S fits waists up to 30 inches, M fits 30–34 inches, L fits 34–38 inches, and XL fits 38+ inches. The iron buckle and hook-and-loop closure allow adjustment within each size for a customised fit.

How tight should a weightlifting belt be worn?

A belt should be snug but not constricting. You should be able to take a deep breath and brace your core against it — the belt provides resistance for your abdominal muscles to brace against, increasing intra-abdominal pressure. If it restricts your ability to breathe in fully before a lift, loosen it slightly. Tighten the hook-and-loop closure after setting the buckle to prevent the belt from loosening during a set.