miR Iron Weights for Weighted Vests, 6 Pieces — 3 lb Each, 18 lb Total, Low-Profile

miR set of six 3lb iron weights provides 18 total pounds of interchangeable ballast designed to fit MIR vests, shorts, and belts for customizable resistance training.

This pack contains six solid iron plates, each weighing 3 pounds, sized to slide into the pockets of MIR short, pro, narrow, women's, and airflow models as well as compatible shorts and belts. The compact 4" x 2.5" x 1.5" dimensions let these inserts sit flush in vest pockets so you can add or remove load quickly between sets or sessions. An official miR stamp on each plate verifies authenticity and helps ensure consistent sizing and balance when used in multiples.

How do these weights integrate with my MIR weighted vest or shorts?

The plates are engineered to match the pocket dimensions of miR short, pro, narrow, women's, and airflow vests, plus miR shorts and belts, so they slide in securely and sit flat against the body. They work in any pocket that accommodates the listed dimensions, making them interchangeable with existing miR inserts. Because each plate is identical, you can distribute weight to maintain balance or concentrate load where you prefer.

• Six 3 lb iron plates per pack, totaling 18 lb.
• Dimensions: 4" x 2.5" x 1.5"—fits miR pockets.
• Official miR stamp for sizing and authenticity.
• Use multiple plates to reach desired total load.

What are the material and size details I should know?

These are solid iron plates designed for durability and compactness. The low-profile rectangular shape minimizes bulk while delivering consistent mass in a small footprint, which helps maintain a natural range of motion during exercise. Their dimensions and weight make them easy to carry and store when not in use.

• Material: cast iron for long-term durability.
• Each plate: 3 lb; set total: 18 lb.
• Plate size: 4" x 2.5" x 1.5"—low-profile design.
• Official stamp on top for easy identification.

Can I use these plates with non-miR vests or gear?

Yes — they can be used with other weighted vests, shorts, or belts as long as the accessory pockets will accept a 4" x 2.5" x 1.5" plate. Check your gear’s pocket measurements and closure security to make sure the plates sit safely without shifting. They’re a practical retrofit option for athletes who need consistent, compact weights.

• Compatible with any pocket that fits the plate dimensions.
• Ensure secure pocket closure to prevent shifting during movement.
• Not specialized for non-standard pocket shapes or elastic-only sleeves.

How should I maintain and store these iron plates?

Iron plates require minimal care: keep them dry and wipe with a lightly oiled cloth if surface oxidation appears. Store plates flat or in a padded pouch to prevent scratching and to protect vest interiors. Regular inspection ensures the miR stamp and edges remain intact and comfortable in the pocket.

• Wipe dry after exposure to sweat; apply light oil if rust begins.
• Store flat or in a protective bag to avoid scratching gear.
• Inspect before use to confirm no sharp edges or damage.

Who is this for: This miR set of six 3-pound iron weights is ideal for athletes, trainers, and fitness enthusiasts who already own MIR weighted vests, shorts, or belts and want precise, incremental loading. It’s also a good option for anyone looking to retrofit compatible vests from other brands with compact, durable iron plates for functional training, running, or strength-conditioning drills. If you need straightforward, authentic miR replacement inserts that keep a low profile and allow flexible load distribution, this set is designed to fit that need without adding unnecessary bulk.