Adinkra, which is stamped fabric made in Ghana, though this is batik, not stamped. (BTW, that video is great and even includes the symbol on my skirt.) The symbols have meaning, and you see a large variety all over Ghana, on fabric, artwork, decorating stores, buses, labels in the grocery store--everywhere. Anyway, the Gye Name symbol (on my skirt it's the non-square symbol) means the "supremacy of God."
Wearing this skirt is always a great opportunity to get out my green/turquoise sandals, my turquoise sunglasses and my turquoise (as opposed to green) turquoise.