A kilt can be pleated with either box or knife pleats. The pleats are tucked into the waistband of the petticoat. Pleats sewn into place are called tucks. This fashion required an underskirt, which was heavily trimmed with pleats, flounces, rouching, and frills. The blouse featured exposed buttons on the outer pockets, which also bore no box pleats. Haredi women avoid skirts with slits, preferring instead kick pleats. The blouse is tucked beneath a sinh with its front pleats (na nang). The pants were typically cuffed and without pleats. Norfolk jackets have double-ended inverted box pleats at the chest and back. One variation in the design of trousers is the use or not of pleats. "Hakama" have seven deep pleats, two on the back and five on the front. These stacked box pleats create more fullness and have a 5&colon;1 ratio. Knife pleats are the most common in modern civilian kilts. Some show particular detail in which there are throat pleats, typical of rorquals. The long, linear laceration extended around the ventral pleats, restricting their distention.