do these work on the thumb?

It depends on how long your thumb is I have really short fat fingers and had to return these and make my own splint

how do I know what size to get, I see no guidance for this.

There is a pdf file link in the full product description. It asks you to print out a sizing band at default printer settings. However, using a new Brother printer, it printed out 1/16 of an inch too small, and I had to bump it up to 103% to make it match the 3½" marker on the printout.

Are these very rigid or semi-flexible? Could I type while wearing it?

They are Rigid n strong. I use one on my pinky n one on my thumb and I type all day on & off with these. I have RA and when my fingers are swollen n stuff, to bend them gives me extreme pain !! So I bought these splints to prevent my fingers from bending you can take them off, move them around. Also another note: I have bigger sizes, there’s one where it comes w/ 32 sizes on a big round keychain. When my fingers r swollen or if ur finger is Broke, you will go they several different sizes. So getting the 3 pack in ur size is perfectly fine, but you may need a few in the sizes before & after I hope this helps !! Good Luck !!

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Brace On EZ Finger Splint Trio Pack, 3 Waterproof Pieces, Sizes 10-12 | Reversible Dual-Angle Fit, Snug/Relaxed Position, Lightweight Low-Profile Design, Handwashing-Ready, Trigger Finger Support

Product ID: 150612907

Details

Age Range (Description)
Adult
Brand
Brace On
Size
3 Piece
Specific Uses For Product
Mallet Finger
Use for
Hand

💧Waterproof for all-day, worry-free use

📏3 sizes (10-12) for perfect fit

🔄Reversible dual-angle for snug or relaxed wear

¥2681

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Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🖐️ Elevate your finger support game—comfort and flexibility that keep up with your hustle!

DUAL ANGLE DESIGN - Flip to switch between snug or relaxed positioning effortlessly
INVISIBLE SUPPORT - Lightweight, low-profile design that stays discreet under clothing
TAILORED FIT TRIO - Three precision sizes to support any finger comfortably
ALL DAY WATERPROOF WEAR - Durable material lets you wash hands or shower without removal
VERSATILE FINGER COVERAGE - Fits thumb through pinky with easy sizing guidance included

The Brace On EZ Finger Splint Trio Pack offers three waterproof, lightweight splints in sizes 10-12, featuring a reversible dual-angle design for customizable snug or relaxed fits. Designed for all-day wear, these low-profile splints support various fingers and withstand handwashing and showering, making them ideal for managing trigger finger and other finger injuries without interrupting your active lifestyle.

Specifications

ASIN	B07S6Z733T
Age Range Description	Adult
Best Sellers Rank	#103,231 in Health & Household ( See Top 100 in Health & Household ) #163 in Finger Splints
Brand Name	Brace On
Color	Clear Beige
Customer Reviews	4.2 4.2 out of 5 stars (644)
Hand Orientation	Left or Right
Item Dimensions	5 x 3 x 1 inches
Item Form	Brace
Item Weight	1 ounces
Manufacturer	Brace On
Material	Plastic
Number of Items	3
Product Care Instructions	Hand Wash Only
Size	3 Piece Assortment
Special Features	Lightweight
Specific Uses For Product	Mallet Finger,Crooked,Hypermobility,Trigger Finger
Sport Type	All sports
Target Use Body Part	Hand
UPC	726481279833
Unit Count	1 Count

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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Excellent communication throughout the order process. Product is perfect.

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¥2681

Duties & taxes included

In stock

Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Japan.

Secure transaction

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