What head size is the "One Size" Minus33 Merino Wool Ridge Cuff Beanie

It means it's for "average" sized domes. The respondents claiming it will comfortably fit all head sizes are likely the same 5'10 guys claiming to be 6'1". I don't wear hats, thus cannot relate to hat size. I however wear a size 62 motorcycle helmet. This is determined by measuring perimeter of dome from just above (15mm) eyebrows. I am 61.8 cm. As delivered new, this beanie is very snug and barely covers down to mid ear. I soaked mine in cold water for 5 minutes then stretched and tugged over my head. Finally, let it air dry at room temp fitted over 1 gal paint can to 'block it', preventing shrinkage. This worked for me such that it doesn't pull down as low as i'd prefer but its no longer so tight to give me a headache.

How many % merino wool?

100% Australian Merino Wool - Lightweight - 18.5 micron - 230/m - helps regulate body temperature Imported. I brought with me two other beanies on my trip to Iceland. Out of the 3 I used this more as it kept me warm (in below zero temperature with wind chill)

Is this hat thin enough to wear under a bike helmet?

Hello, This hat can be worn under a helmet. It is approx. 3mm in thickness, yet still very warm. Let us know if you have any other questions! - Minus33 Merino Wool Clothing

Is it good choice to wear under -20 degree Celsius?

Merino Wool is very warm while also being very lightweight. I have worn mine at -4 F, which is -20 C, and been very comfortable.

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Reviews

F**A

Amazing color choice

Comfortable, nice and warm with a great colour choice. Brought as a present amazing quality.

14.08.2025

A**R

Brilliant, 5/5

Great hat,.really comfortable, traps heat very well as it's merino wool.

25.05.2024

T**N

A must for Winter

Great.

13.12.2024

G**A

Never taking this off

The beanie has been my best outdoor gear purchase in a long time! It feels so incredibly soft, fits really well and for someone like me who gets cold VERY quickly it kept me really warm and snug! Also looks really cute! Definitely recommend.

15.06.2021

T**A

Well made, good colour, feels beautiful. Front fold can be unfolded and adjusted.

It's well worth the money, quality of material and build is first class.

4.03.2019

S**L

great hat

really warm

24.03.2019

K**Y

Incredible hat!

I’ve bought many hats but finally have settled on this one. Merino wool is the perfect material for a beanie; extremely soft, comfortable, warm and breathable. Would highly recommend!

3.12.2018

F**D

Way too small, very tight, unwearable

Material is good, hence, the two stars. But I cannot wear the thing. Pity.I cannot recommend it, unless you buy it for a little child

5.12.2024

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