content will tend to be very stretchy, carriers which are 100% cotton or other natural fibers will tend to have less lengthwise stretch. Woven wraps are pieces of woven fabric of varying thickness. Natural fibers are usually chosen, with cotton being the most common, but hemp, linen, silk and wool are also used. A variety of weaves are used. Most common are homespun or handwoven fabrics with simple over-under weaves, twills and jacquards. Most weaves provide some give or stretch diagonally. Simple pieces of cloth Pieces of cloth can be turned into slings by wrapping the fabric around the carrier and the baby and either tying it with knots or using a twist and tuck method to secure the ends. Rebozos (Mexico), mantas (Peru), kangas (Africa) and selendangs (Indonesia) are all rectangular pieces of cloth but are tied or wrapped in many different ways. Wraps are also simple pieces of cloth. The podaegi and other Asian-style baby carriers The podaegi (, also spelled podegi) is a Korean carrier with a medium to large rectangle of fabric hanging from a very long strap. Traditionally the rectangle is quilted for warmth and wraps around the mother's torso, while the straps are wrapped snug under the baby's bottom and tied around to the front to support and secure the baby on the mother's back. Western interest in the podaegi style has led to new wrapping methods which do go over the shoulders, and to narrower "blankets". Variants of this shape include the Iu-Mienh/Hmong carrier and the Chinese bei bei. Iu-Mienh/Hmong carriers and bei beis are both customarily used with over-the-shoulder wrapping and often have stiff sections which help provide head support or block wind. The Chinese Mei-tai (, Cantonese pronunciation) - meaning mei: to carry on the shoulders / tai: strap, band - is a square or nearly square piece of cloth with parallel unpadded straps emerging from the sides of each corner. It was traditionally secured by bringing all the straps together in a twist with the ends tucked. A variation on the traditional mei tai was popularized in Australia in the 1960s. There are now hundreds of different brands of mei tai available with a variety of features, but the longer straps, taller body and wrap-style tying method are found in almost all of them. Mei tais are suitable for front or back carries with children ranging from birth to as