This product is foot warmer that can be worn on the legs at the time of the sports and hiking. It is possible to deform the bag to tighten the upper and lower strap so you can put items such as raincoats and climbing in it. It could be used for portable storage. 

Feature

>  Foot warmers can be largely divided as the top being for the thighs, 

    the middle being for the shins, and the bottom being for the feet.

 > Tighten the strings attached to the top and bottom of the leg warmers 

     to use as a bag that can store hiking clothes or other items such as rain coats.

Purpose

 > Leg warmers that can be worn during hiking or other sports activities.

 > For use on a bicycle or a motorcycle, the leg warmers can be pulled all the way up 

    to the thighs.

 > It can be also used as a pillow or raincoat bag for camping