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Comfort Cool Thumb CMC Restriction Splint Comfort Cool Thumb Brace - Size Chart Comfort Cool Thumb Splint

Comfort Cool Thumb CMC Restriction Splint - Black

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Product Option

Small, Left

SKU NC79562
$32.95 Each

Small, Right

SKU NC79563
$32.95 Each

Small Plus, Left

SKU NC79556
$32.95 Each

Small Plus, Right

SKU NC79557
$32.95 Each

Medium, Left

SKU NC79564
$32.95 Each

Medium, Right

SKU NC79565
$32.95 Each

Medium Plus, Left

SKU NC79558
$32.95 Each

Medium Plus, Right

SKU NC79559
$32.95 Each

Large, Left

SKU NC79566
$32.95 Each

Large, Right

SKU NC79567
$32.95 Each

Large Plus, Left

SKU NC79560
$32.95 Each

Large Plus, Right

SKU NC79561
$32.95 Each

X-Large, Left

SKU NC79550
$32.95 Each

X-Large, Right

SKU NC79551
$32.95 Each
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Comfort Cool Thumb CMC Restriction Splint is designed to support thumb CMC joints and allows full finger function. The terry cloth lining keeps things comfy, while the perforated neoprene fabric offers the wearer the utmost level of comfort and aids in keeping skin cool and breathable. The strengthened stitching on this FSA-approved splint enables users to shorten the splint below the thumb MP joint. It is specifically designed for osteoarthritis and medial subluxation of the thumb CMC joint.

Comfort Cool Thumb CMC Restriction Splint Benefits

  • Neoprene with holes keeps the skin cool
  • Offers pleasant, mild compression
  • Permits complete, unrestrained finger functionality
  • Lined with terrycloth for extra comfort
  • Odor-controlling antimicrobial fabric


Total: $32.95

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Product Features

  • Contoured neoprene strap wraps around the thumb CMC joint and the first metacarpal for direct CMC joint support
  • Provides gentle compression that relieves thumb discomfort associated with CMC joint arthritis and/or instability, tendinitis, or repetitive motion
  • Constructed with 1/16" (1.6mm) perforated neoprene, featuring a terry cloth liner for cool and comfortable skin
  • Ideal to use for compression
  • Anti-microbial and does not contain natural rubber latex

Who should use CMC Splint?

Conditions that may require the use of a splint include:

  • Joint Dislocation
  • Arthritis
  • Stabilized fractures
  • Joint instability or stiffness
  • Contractures

Frequently Bought Together

How do you measure for Comfort Cool Thumb CMC Splint?

There are two ways to measure for Comfort Cool Thumb Brace:
1. Flexible cloth or vinyl measuring tape (sewing).
2. Paper, ruler (or tape measurer), pen, scissors, and tape.

Method 1: Sewing or vinyl measuring tape

  • Secure the end of the tape measurer under the thumb. 
  • Keep the palm flat, wrap around the palm, and make sure to wrap it over the top of the knuckles.
  • Note the measurement and consult chart located in the images.

Method 2: Paper, ruler, pen, scissors, and tape

  • Cut a strip from a piece of paper approximately a 1/2 wide. 
  • Tape one end and secure to skin across knuckles. 
  • Keep the palm flat, wrapping it around the palm and across the knuckles. 
  • Mark with a pen where the paper overlaps. 
  • Remove and measure the length of the paper to the pen mark.

How to use Comfort Cool Thumb CMC Restriction Splint?

  1. Slide the thumb into the Comfort Cool thumb wrap. Wrap the splint around the wrist and secure the hook and loop fastener comfortably on the dorsum (top) of the hand.
  2. Pull the CMC strap firmly from the base of the thumb, attaching it to the curved hook fastener on the thenar (palm) eminence.
  3. Gently pull the strap through the thumb web space and secure it to the hook fastener on the dorsum (top) of the splint. Trim the strap if needed.
  4. To allow greater IP motion, cut a curve along the volar thumb edge. If the thumb MP joint support is not desired, cut off the thumb sleeve below the thumb web seam. Be sure to trim just above one of the stitched reinforcements. Trim next to the distal edge of the curved hook fastener on the thenar no closer than 1/4" (6.4mm).
How to use Comfort Cool Thumb CMC Restriction Splint

Care Instructions

  • Hand wash the splint in lukewarm water with a mild soap.
  • Allow it to dry with a cloth.


1. How does a thumb spica splint work?

Thumb spica splints are orthopedic splints that are used to limit movement and provide support and comfort to people who have a thumb injury. The other fingers are usually free to move in this type of splint.

2. How tight should my Cool Comfort Thumb Brace be?

When you put it on, the long side of the brace should rest outside your thumb and along the inside of your wrist and forearm. Secure the straps around your thumb and wrist so that the brace is comfortable to wear and does not obstruct your circulation. Your cast was designed to prevent excessive movement and should, therefore, be snug but not too tight. If the splint is bothering you, see your doctor.

3. What is a CMC Thumb Splint used for?

The main purposes of using a CMC joint brace are to stabilize the joint, reduce pain symptoms, and treat osteoarthritis problems. It helps enhance the performance of everyday activities.

4. How long should one wear a thumb splint?

It is often recommended that a splint be worn for most of the day for 3 to 4 weeks. During this time, you may need to remove the splint several times a day.

5. Is it ideal to wear a thumb splint at night?

Wearing the CMC Splint all night will make your joints stiff. Don't wear your working splint overnight unless you've been told to by your therapist or nurse.

Comfort Cool Thumb Splint Specifications

Size Circumference
Small 6" to 7" (15cm to 18cm)
Small Plus 6-1/2" to 7-1/4" (17cm to 18cm)
Medium 7" to 8" (18cm to 20 cm)
Medium Plus 7-1/8" to 8-1/4" (18cm to 21 cm)
Large 8" to 9" (20cm to 23cm)
Large Plus 8-1/4" to 9-1/2" (21 cm to 24cm)
X-Large 9" to 10" (23cm to 25cm)
Comfort Cool Thumb CMC Restriction Splint
For size, measure palm circumference.
Note: Plus sizes are a half size bigger in the hand and a full size larger in thumb circumference to accommodate enlarged thumb conditions.


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