is this the right size for pinky?

These come in at least two sizes. Probably best if you get fitted by an o Occupational Therapist.

where is the measurement information to pick a size?

If you look at the display on Amazon, right after the name of the product you will see "AA." That is the size. They range from AA to A to D. Here's what one purchaser wrote, based on language on the packaging when the product was delivered: I, "Measured from palmar crease to distal finger crease." specifically on my left pinky finger, did exactly as told to do, and got (give or take 1/16") 2 1/2"; wherein I purchased this size. After receiving the product and reading the packaging/instructions it clearly indicates that AA is 2 1/4" and A is 2 3/4"

What is the difference between size a and size aa? i need one for my little (pinky) finger

I had the same question, so I bought both an A and an AA. For a pinky finger, especially for a woman, the A is too large. Get the AA. I returned the A.

ASIN	B07BKLK889
Are batteries included?	No
Best Sellers Rank	#340,457 in Health & Personal Care ( See Top 100 in Health & Personal Care ) #451 in Finger Splints
Brand	LMB
Customer Reviews	4.1 4.1 out of 5 stars (455)
Date First Available	16 June 2018
Generic Name	LMB Spring Finger Extension Splint, B
Item Dimensions LxWxH	17 x 13.2 x 1.8 Centimeters
Item Height	0.7 Inches
Item Weight	18 g
Item Width	5.2 Inches
Item model number	74103
Manufacturer	LMB
Model number	74103
Net Quantity	1.0 Count
Number of Memory Sticks	1
Product Dimensions	17.02 x 13.21 x 1.78 cm; 18 g

LMB Spring Finger Extension Splint, B

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