The male national dress in Oman consists of the ''dishdasha'', a simple, ankle-length, collarless gown with long sleeves. Most frequently white in colour, the dishdasha may also appear in a variety of other colours. Its main adornment, a tassel (''furakha'') sewn into the neckline, can be impregnated with perfume. Underneath the dishdasha, men wear a plain, wide strip of cloth wrapped around the body from the waist down. The most noted regional differences in dishdasha designs are the style with which they are embroidered, which varies according to age group. On formal occasions a black or beige cloak called a ''bisht'' may cover the dishdasha. The embroidery edging the cloak is often in silver or gold thread and it is intricate in detail.