You can use any 3 of your choice, I used size 10 thread, size 5 thread and lace weight wool held together through out to produce a light, lacy scarf with gorgeous drape. You’ll want to use this technique again and again.

You can use any yarn/hook combo you choose though, a size K hook and chunky yarn would be thick and soft too.

Special notes:
For the first dc of each row, instead of working a ch3 as usual, make a sc, ch2. The sc gives the base of the stitch a thickness that’s more visually appealing.