Dear Sarah, The "N" & "M" refer to width, N for Narrow, M for Medium. Birkenstock also uses "R" for Regular which is also Medium. The "EURO-METRC" sizing codes can be confusing, many times they will overlap them with US sizing, which can be even more confusing! I hope this helps. Best regards, Don Johnson, JOHNSON'S SHOES AMAZON

BirkenstockArizona BF Black unisex-adult Sandal

BirkenstockArizona BF Black unisex-adult Sandal

Q: What's the difference between birkibuc, birkoflor, nubuck & plain ol birkenstock shoes? i am so confused!

birkibuc is faux sued, birkoflor is faux leather, nubuck is suede or brushed leather, and plain old birkenstock are made with leather.

Q: What does the M and the R stand for in the sizes? For example, what does 40 R mean?

Birkenstock usually come in two widths. Regular and narrow. Some retailers will say M, medium instead of regular but they are the same thing.

Q: Are these real birkenstocks?

To be perfectly honest with you, I won't know the difference. I wear both and the comfort levels are the same. Whether Betula's or Birkenstocks, I believe you will love them both. I just compared boxes of the Birkenstocks and Betula's in my closet. The information is the same on both. The insole:leather, foot bed:natural cork, upper, Birko-flor, sole:EVA. The same material is used on both and you wouldn't know the difference. I have worn both over 40 years and the comfort is identical. I purchased a black pair, of Mayari, from Zappos and paid over $100. They don't feel any different than the $44 Betula's I purchased from Amazon. They both feel great and who can beat the price at Amazon? Hope this helps.

Product ID: 330890728

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Frequently Bought Together

Birkenstock Milano Unisex Leather Sandal

Birkenstock Arizona 41 Black Birko Flor

Description

BirkenstockArizona BF Black unisex-adult Sandal

Specifications

Insole Material	Leather
Material Type	Leather
lining-description	Leather
Outer Material	Leather
Shoe Height Map	Low Top
Embellishment Feature	Buckle
Strap Type	toe-strap
Is Autographed	No
Water Resistance Level	Not Water Resistant
Sport Type	Walking
Additional Features	logos
Apparel Closure Type	Pull-On
Style Name	Arizona
Pattern	Solid
Seasons	Spring/Summer
Heel Type	No Heel, Wedge Heel
Toe Style	Open Toe
Apparel Occasion and Lifestyle	Casual
Color	Black Birko-flor
Occasion Type	Outdoor

Have a Question? See What Others Asked

What's the difference between birkibuc, birkoflor, nubuck & plain ol birkenstock shoes? i am so confused!

What's N and M ?

What does the M and the R stand for in the sizes? For example, what does 40 R mean?

Are these real birkenstocks?

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