WHAT IS IT
A crochet pattern for a ribbed neck warmer (dickie/collar). The pattern is very easy and straight forward and follows measurements so you can make it in any length and size - you can both choose a high neck that can be folded or a shorter one. The different panels you crochet will be sewn together at the end. 

A big thanks to my testers: Line (bordeaux neck) @winthers_crochet and Linnea (two colored neck) @cute.pastel.crochet for your help! Linnea used 4,5 mm hook and 250 g of yarn (100 g = 210 m). Line used 5 mm hook and 126 g (100 g = 135 m)

LANGUAGE
English
Dansk

STITCHES (US terms)
half double crochet 
back loop 
chainless foundation 
chains 
slip stitches

MATERIALS
5 mm hook or 10 mm hook (regular/chunky version). Or any hook you’d like! 
Wool. Either size 4/aran/worsted (50 g = 100 m) or size 6/super bulky yarn. Or any yarn you’d like! 

This is what I used for my neck warmers: 
White & dark blue neck: 5 mm hook. Size 4 (aran), 50 grams = 100 meters, Brand: Filcolana. White: 100 g. Dark blue: 200 g. 
Chunky neck: 10 mm hook. Super bulky. Brand: Drops Snow. 116 g (50 g = 50 m)
My head measurement: 55 cm. 
 
Add/remove 100 meters for each size (4 cm in circumference, 2 cm in length) you go up/down.