SuperiorThreads

I love those cushions nana-up-north. I want to sit and read a book on them.
The size of the needles depends on the size of the thread. Use a 70/10 needle for very fine threads like silk, 60 wt threads or clear monofilament threads. The 80/12 is great for piecing threads like 50 wt threads. The 90/14 are great for the 40 wt threads. And 100/16 are needed for the 30 wt or heavier threads. We suggest a topstitch needle as the groove down to the eye is deeper protecting the thread from rubbing and fraying and the eye is larger, again protecting the thread (and saving our eyes when we thread them).
When purchasing cotton threads make sure you use a long or, better yet, extra long staple cotton. Anything other than that or if it the staple isn't mentioned at all, will cause a lot of lint and isn't as strong.

Ricci