I've seen lots of them at Walgreens in many different sizes. Also, is there a Ricky's near you? They carry them.

I tried some. If your hair is very thick, they may work well for you. My hair is on the thinner side - they didn't work for me. I had various sizes, but they just wouldn't grab enough hair to hold up and kept falling over. When eventually they would grab a hunk of hair and stay put until it dried, it didn't look good when I took it out. I could see the claw marks.

There might be something on youtube that would demonstrate them for you and then you could get an idea of what size would work for you.
2/c and some 3A. Modified CG.
Protein sensitive
Highly porous. Color over grey.
Best 1st day method: Super Soaker
Conditioners: Curl Junkie Beauticurls Strengthening Conditioner,
Deep condish: Curl Junkie Curl Rehab
Stylers: Mix Curls in a Bottle into everything for shine. Terrible pj
Sometimes try roller sets - classic glamor but I prefer my curls.
Every day is a gift