When it comes to comfort, there’s nothing like soft, cotton . Cotton does not contain any chemicals, so it is naturally hypoallergenic and won’t irritate sensitive skin or cause allergies. Cotton is very soft against the skin, which is why it is used so often in sleepwear. Cotton is a good conductor of heat, so it draws heat away from your skin to keep you cool and dry. Cotton also breathes, so it provides breathability and ventilation. There are two types of cotton women's sleepwear : knit and woven. Knitting is a process that loops a piece of yarn in a row a few times, then links those loops with another row of loops and so on. Knit fabrics are naturally stretchy because of the loops in the fibers. Woven fabrics are made from two pieces of yarn that are stretched over a loom and woven together in both horizontal and vertical directions. Woven fabrics do not stretch because their fibers run at 45-degree angles to one another. HerRoom.com features a variety of cotton sleepwear from many different manufacturers. Check out pajama jeans and other cotton sleepwear selections at HerRoom.com today and enjoy free shipping.