Brooke's lined Koolhaas Hat

Brooke's lined Koolhaas Hat in gray heather wool (I think this is Cascade 220) with a few extra repeats added to the original pattern.  This makes the hat long enough to cover ears sufficiently.  Two women at my house with different length heads both "needed" those extra repeats.  I do think the Koolhaas Hat looks a bit "short" on the original pattern model's head. 

Choose a color of double knit fabric as close to the wool color as possible.  Cut a lining the circumference of the beanie plus 1/4" for a seam allowance.  I like to cut the length of the lining strip so that it reaches just to the top of the ribbing.  Turn the beanie so that the wrong side is facing you.  Seam the lining, press the seam open to minimize bulk and put the beanie inside the lining tube with the wrong side of the lining touching the wrong side of the beanie.

Turn the raw edge of the lining under 1/4", pin and stitch to the beanie just above the bottom of the ribbing on the back side.  Double knit fabric won't unravel so you can leave the top edge of the lining raw for a less bulky lining.  With regular sewing thread and needle, catch only the back of your knit stitches so the thread doesn't show on the front of the beanie.

I like to knot my thread every few stitches so if a stitch "pops" the whole lining doesn't come unstitched.  Pull the knot tightly and don't cut the thread; just keep stitching.

 A nice edge, just above the site line of the ribbing.  The lining is invisible on the outside.

 I tack the lining at the top raw edge in about 4 places, just to help keep it from shifting while being worn.

Lining a wool beanie is a great option if the intended wearer is sensitive to wool.  There is nothing like wool for warmth but sometimes it's just too itchy.  This is a great solution for people who are wool sensitive.