Contrary to urban tales, you don't lose most of your body heat through your head. That said, it is still important to cover your head and neck, especially when not moving or sleeping.
One of the Following Combinations:
Buff and Beanie
A very popular and comfortable headgear system
Most popular combo
Balaclava
Simple one piece system
Good option for younger Scouts
Wool Beanie and Scarf
Very versatile system used by military
Scarf can be worn SO many ways
Excellent option for those who know how to use a scarf
An uncovered head does get cold
You should have something that will cover your head and something to cover your neck and face
This is a very popular, comfortable and practical way of insulating your head
This is a great piece of gear for 4-seasons
Wool or Synthetic
Merino wool is generally preferred
Examples:
SO Many designs
Many for under $10
Military Wool Watch Cap: NSN 8405-01-006-1074
Works great for real world use
So many styles
Merino is great
These hate Velcro
Built in beanie lights aren't usually great for illuminating trails
Having a subpar light is better than not having a light
This is one of the most popular pieces of headgear and can be used several different ways
When on the move, it can be worn around your neck to protect neck and limit drafts through neck opening in shirt/jacket
When it gets colder or windy, it can be pulled over face
When static, it can be pulled over head to keep head warm, with or without use of a jacket hood
It can also be worn like a beanie to cover top of head
Fabrics include microfiber or wool
Wool is generally preferred for comfort but is not as durable or stretchy
Generally thin
Allows for elasticity - one size fits all (mostly) for all uses
Can be worn when on the move (not too hot)
Can be worn over mouth - you can still breath through it
When using as a layer over face, it will get wet
After it gets too wet, rotate the gaiter to the side
Rotating allows you to breathe through a dry part of buff as wet side dries
By the time you rotate all the way around your neck, the original wet spot will be dry
Ideally use in conjunction with beanie or other hat
Named after a Russian village in the Crimean War
Covers neck, face and head
Can be worn head neck gaiter to cover different parts of head and/or neck
Simple and easy to use
Good option for younger Scouts
These can be made from thin, medium or very thick fabric
A really thick balaclava may be just too hot to wear during the day, limiting its utility
A really thick balaclava is really nice on very windy days in subfreezing temperatures when you are exposed and static
We generally avoid this type of scenario
Generally used to cover neck
Very Versatile
This is one of the most versatile pieces of clothing and is under utilized
So many different ways of wearing these
Can cover just the neck
Can cover neck and face under eyes
Can be used to cover just the head like a beanie
Can be doubled or quadrupled up to be worn as thicker hat
Can be used to cover head, face and neck - Shemagh/Tactical style
Can also be used to cover chest of torso warmth
2 Scarves will cover even more of your body
Seal out drafts
Wrap around neck 2-3 times to fill gap between chin and upper jacket opening
Pull up hood and wrap scarf around neck over hood to seal off neck opening
Use it to seal jacket at waist by wrapping it like a belt - this prevents wind from blowing threw jacket
Other uses
Shoulder sling
Hand warmers
Leggings
Place bottle with hot water in scarf tube style and place in jacket or sleeping bag for warmth
Fill with fabric or other soft material to make pillow
Fill with gear or supplies and tie off end
Wear around waist like fanny pack
Wear slung over shoulder
Tie to or hand from pack
Often used as a fashion accessory
Usually not an important feature for Scouts
If worn for fashion, do a little research - there are several preferred ways of wearing a scarf
Military Wool Scarf: NSN 8440-00-160-6843
These and replica military scarves are tubular
A Wool Tubular Scarf is Preferred
Tubular shape allow for a LOT of versatility
The issued military scarves leave the ends open
This preferred
It allows for a few more uses
Replica scarves often sew the ends closed
You can open the ends and rehem (or leave raggedy)
You can also just use them as is and double it up when you want a tube
Tubular scarves with closed ends honestly work fine if you know how to use them
Patu
Aka Afghan
Blanket Shawl used in Afghanistan
Very warm
Not as practical for Scout or Backpacking use
Very Versatile piece of Clothing
So many ways cowboys, Scouts of Old and people in Southwest and Southcentral Asia have used this
Generally Cotton - so not perfect for winter use as an insulation layer
You can find wool ones or make your own
Works like oversized scarf or mini blanket
Cotton is ideal for many uses
Wiping face
Cleaning lenses and optics
Use to sponge up water
The preferred fabric for wound dressings
Washing body parts
For hygiene
To remove contaminant (spilled white gas
For wound care
Works fine as an insulation layer on dry days as long as your have a non-cotton backup layer
Cotton is often used as a insulation layer in dry environments such as the desert and arctic
It is really nice to have one cotton item
If you have one cotton item, a shemagh is probably your best choice