ZW-4
ZW-4 Thin and comfortable fit
ZW-4 Support widely on the lower back
ZW-4 Easy-to-use integrated assistive belt
ZW-4 Rapid evaporation of sweat
ZW-4 Suppress slip during sports
ZW-4
ZW-4 Thin and comfortable fit
ZW-4 Support widely on the lower back
ZW-4 Easy-to-use integrated assistive belt
ZW-4 Rapid evaporation of sweat
ZW-4 Suppress slip during sports

ZAMST ZW-4

Light

Light model with breathability and quick drying

The most breathable model among the ZW series and provides support to the entire lower back comfortably.

Where to Buy
Product availability and assortment may vary by country or region. Please refer to your local website for details.

Product Description

ZW-4 Rapid evaporation of sweat

Rapid evaporation of sweat

Coolmax® Fabric is used for quick evaporation of sweat inside the main body. It is soft, lightweight, quick-drying, and prevents getting cold after playing.

* Coolmax® is a trademark of The LYCRA Company.

ZW-4 Thin and comfortable fit

Thin and comfortable fit

Applied with mesh material with the highest level of breathability among the ZW series. It does not bother when wearing outerwear, and keeps breathable and comfortable during playing.

ZW-4 Support widely on the lower back

Support widely on the lower back

A rigid mesh patch attached to the back of the main body supports a wide area of the dorsal region and enhances the stability of the lowe back region.

ZW-4 Easy-to-use integrated assistive belt

Easy-to-use integrated assistive belt

The assistive belt enhances the effect of abdominal pressure elevation. The auxiliary belt is integrated into the main body to allow easy application without placing the strain on the lower back.

ZW-4 Suppress slip during sports

Suppress slip during sports

Two pieces of the anti-slip tapes are used inside the main body to prevent the belt from slipping with strenuous movement.

Size Chart

Measure the circumference of your natural waist at the navel. If your measurement falls between two sizes, choose the larger one.

ZW chart

Size

S

M

L

LL

3L

Circumference of the waist

65 - 75 cm

75 - 85 cm

85 - 95 cm

95 - 105 cm

105 - 115 cm

Recommended Products

Lower back pelvilock
None

ZAMST Pelvilock (Pelvic support)

Short type for pelvic stability

Lower back ZW3
Light

ZAMST ZW-3

Lightest model for comfortable fit

Lower back ZW5
Moderate

ZAMST ZW-5

Standard support for stability and ease of movement

Lower back ZW7
Strong

ZAMST ZW-7

Powerful support for stability

FAQ for this product

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Can I wear a lower back brace at work and still benefit from it?

The use of a lower back brace may be used outside of exercise. Wearing a brace can increase pressure on the abdomen, stabilize the lower back, and lighten the burden on the muscles that maintain posture for long periods by using the back support (stay). However, over a long time, the pressure on the abdomen may become painful or uncomfortable due to slippage or steam, so please take off the brace during breaks and do light flexibility exercises to relax your back as needed.

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How do I wash the brace?

Most braces are machine washable. After washing, hang them to dry in the shade. Please avoid washing with light-colored items, as colors may fade or transfer to other fabrics. When washing with other clothes, use a laundry net to prevent fraying or streaking. *Hand washing is recommended for some products. Please refer to the instruction manual for specific details (instruction manuals are also available on each product page of the Zamst website).

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Should the brace be wound tighter?

First, ensure you have the correct size and follow the instructions in the manual for proper application. Be cautious not to tighten it too much, as excessive tightness can lead to congestion

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When I measure the size of the area for the brace, the figure is on the borderline between size S and M. I am not sure which size I should choose.

If the size is borderline, we recommend the larger size.

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Can you stop wearing a brace once the pain is gone?

From Dr. Evan Not necessarily. One of the biggest mistakes I see is athletes assuming they're fully recovered just because the pain has gone away. Pain is only one piece of the puzzle. Before I recommend discontinuing a brace, I want to see good strength, balance, confidence, and sport-specific movement. Can you jump, cut, sprint, and land without hesitation? That's what matters. Many athletes feel fine before their body is truly ready for the demands of competition. In most cases, I recommend gradually reducing brace use rather than stopping all at once. The goal is to make sure you're not only pain-free but also physically prepared to handle your sport safely.

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When should you start wearing an ankle or knee brace?

From Dr. Evan As a sports physical therapist, I don't believe everyone needs a brace. But there are situations where a brace can be a smart tool. If you had just had an acute injury such as an ankle sprain or knee sprain a brace is a great tool during the protection phase to reduce the risk of further injury and provide stability and comfort. In my clinic, I often see athletes wait until they've been injured multiple times before thinking about prevention. A brace can provide an extra layer of protection during high-risk activities while you're continuing to build strength, balance, and movement control. The goal isn't to rely on the brace—it's to use it strategically to help keep you healthy and performing at your best.

Evan Jeffries, PT, DPT, MS

EVAN JEFFRIES is a physical therapist with a Doctorate in Physical Therapy (DPT) from the University of St. Augustine for Health Sciences. He has vast knowledge of the musculoskeletal system and has treated many orthopedic conditions by bringing a proactive approach to healthcare and lifestyle.

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