3 In 1 baby sleeping bag is used for three purposes. Fisrt it can used as a baby sleeping bed. Second it can used as baby carrier while travelling. Third it can be used as a wrapper while zipping around the baby it protects from mosquito and also keeps the baby in warm condition as it covers the entire bod of the baby. The inner portion is filled with recron so you can able to wash the bed. After washing also it will re-gain its original shape.