The Allotrope Slouch Beanie is crocheted using Mosaic Stitches.
This beanie is crocheted from the bottom up using 2 colors for a fun diamond design beanie.
This is a free pattern available on my blog. 
This beanie is great for boys, girls, and the whole family!
 
Pattern details
▶ Intermediate level (Mosaic Crochet)
▶ Sizes adjustable for any size 
▶ Uses worsted weight yarn (2 colors)
▶ Size US 7/4.5mm & US I/5.5mm Crochet Hook
▶ Tapestry needle 
▶ Pom Pom Maker (optional)
▶ Written in U.S. Terms