Carmel Tailor's Chalk is the perfect chalk for tailors as it contains a blend of waxes, resins, and clay that adheres well to textiles. It is engraved with grooves to provide extra grip for ease of application and precision. The Tailor's Chalk comes in two forms: Tailor's Chalk Super-Glide, and Tailor's Chalk Triple-Groove. Also available is Tailor Chalk Wax/Clay Blend.
Tailor's Chalk - Wax Based
Two Sizes & Grips
The best I have ever found in my 60 years of sewing