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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EZ Finger Splint Trio 3 Pack (4,5,6)

Product ID: 430816076

Details

Brand
Brace On
Size
13 14 15
Specific Uses For Product
Turning Finger
Age Range (Description)
Adult
Net Quantity
1.00 Count

💧Waterproof for all-day wear

⚖️Lightweight at 0.02 kg

🖐️3 sizes (4,5,6) for perfect fit

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€ 57.79

Duties & taxes included

In stock

Sold byAmazon ItalyDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🖐️ Heal in style, support with ease—your fingers’ new best friend!

ADAPTIVE FIT NO FUSS - Flip the splint to switch between tight or relaxed fit—no straps or tape needed.
WATERPROOF DURABILITY - Keep your splint on through showers and hand washing—hassle-free healing.
TARGETED FINGER THERAPY - Supports mallet, trigger, crooked fingers & limits hypermobility for faster recovery.
ALL DAY COMFORT SUPPORT - Low-profile, lightweight design lets you wear it day and night without distraction.
TAILORED FOR EVERY FINGER - Three distinct sizes ensure a precise fit from pinky to thumb—check the sizing guide!

The EZ Finger Splint Trio by BraceOn offers a versatile, lightweight, and waterproof solution for finger injuries including mallet and trigger finger. Featuring an innovative adjustable fit without straps, it provides 24/7 therapeutic support in three sizes (4,5,6) to ensure optimal comfort and faster healing for busy professionals on the go.

Specifications

ASIN	B07S25JPZP
Age Range (Description)	Adult
Age Range Description	Adult
Best Sellers Rank	#186,282 in Health & Personal Care ( See Top 100 in Health & Personal Care ) #252 in Finger Splints
Brand	Brace On
Brand Name	Brace On
Closure Type	Hook, Loop
Customer Reviews	4.1 out of 5 stars 3,164 Reviews
Item Dimensions	12.7 x 7.6 x 2.5 Centimeters
Item Weight	0.02 Kilograms
Manufacturer	Brace On
Material	Plastic
Material Type	Plastic
Model Number	AUB09MYC29S5
Net Quantity	1.00 Count
Number of Items	3
Part Number	AUB09MYC29S5
Product Care Instructions	Hand Wash Only
Size	3 Piece Assortment
Special Features	Lightweight
Specific Uses For Product	Mallet Finger
UPC	726481279802
Unit Count	1.00 Count

Reviews

J**S

Reduces finger joint mobility so finger has time to heal.

21.03.2023

P**N

Mallet Finger

9.12.2025

S**P

Easy wearing

1.09.2023

M**S

Funcionaron muy bien

14.09.2025

A**R

Perfect Fit

4.02.2026

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