While Ragg Tyme Fingering was designed specifically as a sock yarn, it's also ideal for lacey scarves and shawls.  When I want the blend and color in a thicker yarn for a hat or sweater, it's easy to create 3 strands from the single by using the Navajo plying technique.  Voila' -- a worsted weight yarn!  
https://www.knitpicks.com/learning-center/triple-stranding
 
3-ply Fingering
approx. 400 yds/4 oz.
US 1-3 needles; B, C, D hooks
6.75-8 stitches per inch
60% alpaca, 30% merino, and 10% Tencel
hand wash; lay flat to dry
Spun in USA