Draw two arcs at the bottom of the trouser leg. Sew the face cloth and the lining cloth together from the reverse side, leaving the leg edge as the mouth. Continue to add cotton from the mouth, sew the edges with thin thread, and sew a few more in the middle.

Sew the left seam from the back, just like sewing the left seam of a cotton-padded jacket. The bottom of the trouser leg must be sewn according to the arc-shaped strip drawn when cutting, and it is best not to cut off the extra small triangle cloth, so as not to affect the shape of the trousers seam when the trousers are changed into open-backed trousers. Sew the two trouser legs made separately together from the middle.

Fold the toes of the trousers inward and sew them into a small triangle. Fix both ends of one piece of cloth on one side behind the trousers, and fix one end of another piece of cloth in the middle of the other side. Then sew two pieces of fine cloth on the ankle of the trouser leg. Just wait for the baby to put on his pants and tie his belt around his waist and ankles.

Cotton trousers refer to trousers made of warm materials such as cotton, chemical fiber and camel hair. Including baby foot-wrapped pants, children dustpan pants, adult slim elastic cotton pants, split cotton pants for the elderly and so on. This kind of trousers generally has three layers, the outermost layer is the face, the cloth is thick and colorful, the innermost layer is the lining, the cloth is mostly light cotton cloth, and the middle is cotton for warmth.

The wadding in the middle is no longer limited to natural cotton, but can be warm-keeping materials such as space cotton and chemical fiber cotton. It turns out that cotton trousers are usually worn outside, mainly because cotton trousers are not easy to clean, and natural cotton will affect its warm-keeping effect after washing.