The baju panjang is a long-sleeved, loose tunic that reaches to calf-length. The garment opens in the front which is secured by a set of usually three jewelled brooches or kerosang. This piece is also referred to as a baju chaylay as it is made from reddish brown batik checked cloth, also known as kain chaylay. The baju panjang was worn over a sarong, which is a piece of cloth sewn together at the ends to form a tube. The wearer then steps into the tube and by folding the excess cloth over itself, tightens the tube into a skirt. The baju panjang is not indigenous to the Peranakans, but was borrowed from the Malays who possibly borrowed it from elsewhere. Although the origins of the garment have not been ascertained, some researchers believe that it could have been derived from the Arabic habaya, a long tunic that opened in the front.