If you are looking for easy and comfortable outfit for your legs then you must go for regular straight leg jeans. This is straight from the knee with large opening and straight through hip to thigh.
In jeans this one is neither too enough tight nor too loose. This is slim through the thigh with narrow opening.
Most casual wear, this is loose fit from the hip to opening. It is too informal and easy to go with all activities.
In jeans design, tighter fit get fame quickly, and boys love to wear skinny jeans. With a zipper fly, it is tight from hip to opening. This is a new addition in jeans.