I was gonna ask too! Its the silk lined hats for curly hair. I think its from the add on this website? Google "curly Zebra" and the first link takes you there.
Grand Goobah Caedran, Aqueous Infusion of Demulcents, Order of the Curly Crusaders
Fia 2cFi, fine texture, med porosity CG 5-29-09 * My hair loves protein! Currently using : DermOrganics Shampoo and IHM, G2B Kinkier Mousse, Re:Coil VMM, Anything Spiral Solutions! MO Sealing. Coconut Oil Pre-Poo, once a month Hard Water shampoo. Avoiding Glycerin in finishing products.
Well, it turns out that the large is quite generous in size and is not tight against my head. My ears get covered and although no hat will not smush your curls, my curls were easily revived with a few flips up and down at the waist. I recommend this hat to all winter curlies.
The patterns are many although not my style (i chose the most benign one i could) they are pretty cute.