These bracelets are each very tightly woven by hand by Fulani women in northern Mali in the style reminiscent of a bullwhip. The quality of their workmanship, the level of detail, is beautiful. The clasp for each is the traditional ball and loop style. There are 7 different colors available: Emerald, Indigo, Amethyst, Black, Ruby, Tangerine, Mustard. There is a limited variation in the size, most approximately 2 1/4 x 1 1/2" (6 x 4 cm) in internal diameter x 7/16" at its thickest point (11 mm)