Batwing
Batwing sleeve is also known as a ‘Dolman’ or ‘Magyar’ sleeve. It is a long sleeve, cut wide at the shoulder with deep armholes that leads to thin tapered wrists, giving it a‘wing-like’ appearance. The Dolman traces back to the Middle Ages, when it was a loose cape-like robe with a sleeve folded from the fabric. It is simpler to sew than a set in sleeve, as it is cut in one piece. But it lost popularity during World War I and II because of fabric shortages. It underwent a revival in the feminine 1940s, before being re-named the Batwing in the 80s, when it owed a lot to Madonna.
Bolero
Bolero here does not refer to the slow-tempo Latin music, but rather a shrug or short jacket. Typically open-fronted, it is collarless with long sleeves and characteristically stops above the waist. It originates, like the music, from Spain. Before the 19th century, it was more commonly referred to as a Zouave. Although these two jackets share all the same features, a Zouave had a military influence, while the bolero had been inspired by dance and sometime even a toreador, Ole!