Our thread of choice is Superior So Fine #50.  This is a lint-free, matte-finish, smooth #50/3 filament polyester thread. With over 134 colors there are endless choices. 

For variegated thread options we use So Fine #40 which is a filament polyester thread with a 1-inch color-change interval.   These thin polyester threads provide excellent stitch definition and strength. 

For 100% cotton thread, we use Aurifil Mako available upon request. 

For all thread choices we try to use a neutral thread color to best blend in with your top and backing unless otherwise requested. 

https://www.superiorthreads.com/shop/category/thread/?brand=So+Fine%21+%2350