I love knitting slip stitch patterns.  The technique provides an interesting texture and appears more complicated than it really is. 
 
This hat pattern creates a subtle detail to a fitted beanie hat and the folded brim provides additional warmth and modern twist. 
 
MATERIALS & INFO
Yarn: Worsted Weight (150 – 225 yards)
Plymouth Yarn Merino Superwash
 
Pattern gauge (larger needles):
26 sts/48 rows per 4”/10 cm
 
SS gauge (larger needles):
22 sts/28 rows per 4”/10 cm
 
Supplies:
5 US (3.75 mm) 16” circular
7 US (4.5 mm) 16” circular       
7 US (4.5 mm) DPNs
Stitch Markers
Darning needle
 
FINISHED MEASUREMENTS
Teen (17”x8”), Adult (S/M) (19”x8”), Adult (L/XL) (21”x9”)
 
Also available on Etsy and Ravelry