RDX X3 Auto Lock Weight Lifting Belt
- Size M, 35 inch waist listed
- 6.5 inch wide padded back support
- Auto lock hook and loop closure
- 12.6 inch length
- Polyester, black
Last refreshed Jul 5, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A padded lifting belt with a quick-lock closure and broad back support for squats and deadlifts. The listing gives a single waist figure rather than a size range.
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ASIN: B08V5L57Y7Model: RX3Category: Weight Belts
Colors Available
Sizes Available
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Overview
A lifter doing squats and deadlifts gets a deep padded rear section here. The belt closes with hook and loop and an auto lock, and it is built from polyester.
A wide back panel spreads pressure over the lower back, and hook and loop makes adjusting between sets fast. The sizing is one waist figure with no chart, and the material list is short.
Who it's for
Gym lifters who want back support on squats and deadlifts in a belt that adjusts fast. Heavy powerlifters and anyone outside the listed waist size should look at a different belt.
Pros and cons
- Wide padded back support
- Quick hook and loop closure
- Auto lock feature
- Light polyester build
- Only one waist figure
- Auto lock not described
- Not a stiff belt for maximal lifts
Performance notes
A belt gives the abdomen something to push against, which raises pressure in the trunk and steadies the spine under load. Panel width spreads that force, and a snug fit is what makes it work. Hook and loop holds well but can loosen more than a buckle or lever.
Specifications
| Brand | RDX |
|---|---|
| Model | RX3 |
| Dimensions & fit | |
| Waist Size | 35 incheslower than 69% of 27 weight belts |
| Size | M |
| Item Dimensions L x W | 12.6 x 6.5 inches |
| Construction & materials | |
| Material | Polyester |
| Color | Black |
| Other details | |
| Closure Type | Hook and Loop |
Closest rivals on specs
Frequently asked questions
How do I fit the RDX RX3 lifting belt?
The belt closes with hook and loop and an auto lock. The listing gives a waist size of 35 inches for size M but no chart or fitting steps.
Is the RDX RX3 a powerlifting belt?
It is a padded gym belt with a hook and loop closure, not a stiff lever or prong belt. The listing does not give thickness.
What material is the RDX RX3 belt?
Polyester.