This Garter Snake Cowl Knitting Kit by Lavanya Patricella uses Baah Yarn La Jolla. Baah's La Jolla line is made from 100% superwash merino wool and is fingering weight (2 ply). Each skein is carefully hand-painted in the USA. The model photo uses the colors, March '19 paired with Green Tea.
The Garter Snake pattern is available for purchase on Ravelry.