Mainly one of the winter clothing styles. The cuffs and waist are tight. The clothes are lined with light, warm materials such as down, foam or silk. It is easy to put on and take off, so that the shoulders, arms and knees are not under any pressure; the pockets should be large and large, and they need to have a flap, a button and a zipper so that the contents of the pocket are not dropped. Choose a fabric that is smooth, smooth and sand-resistant.