ZAMST Thumb Guard (Thumb support)
ZAMST Thumb Guard
Assure stability and fitness to the entire thumb
Optimal for thumb stabilization and suppression of movement.
Product Description
Individualized fit with themoplastic material
A thermal fit guard made of thermoplastic material fits the shape of an individual's finger by molding with warm water and provides a firm support to the thumb movement.
Maintain wrist movement
A short length type does not suppress wrist movement while tightly supporting the thumb. It can also accommodate dynamic wrist movement.
Reduce bulkiness when applying
The compact shape reduces the bulkiness as much as possible when applying. It can also be worn under the baseball gloves or the goalkeeper gloves.
Size Chart
Measure the distance from the first thumb joint to the base of the wrist at its narrowest part and the circumference of the wrist. If your two measurements do not match the proposed combination, choose your size based on your wrist measurement.
Size for JP/Asia model
M
L
Length of thumb
8.0 - 9.5 cm
9.5 - 13.0 cm
Circumference of the wrist
13.0 - 17.0 cm
16.0 - 20.0 cm
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Size for US/EU model
S
M
L
Length of thumb
8 - 9.5 cm
(3.25 - 3.75 inches)
9.5 - 13 cm
(3.75 - 5.0 inches)
13 - 15 cm
(5.0 - 6.0 inches)
Circumference of the wrist
13 - 17 cm
(5.0 - 6.75 inces)
16 - 20 cm
( 6.25 - 7.75 inches)
20 - 23 cm
( 7.5 - 9.0 inches)
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Instruction
Recommended Products
FAQ for this product
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).
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
If the size is borderline, we recommend the larger size.
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.
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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