To provide portable snow shoes for a snow boarder which enables walking on a slope keeping user's feet from sinking even on deep snow and moreover, achieves a convenience of carrying.

Snow shoes of this invention are mounted on snow board shoes 2 for a snow board to walk on snow and are formed in a bag for closing the body 1 of the shoes. The body 1 of the shoes is provided with a valve part 3 which is kept inflated by blowing air thereinto while the air is discharged as required. A fitting recess part is formed in the top surface of the shoes body 1 to fit sole parts of the snow board shoes 2 thereto. Clamp belts 5a and 5b are mounted to securely clamp the snow board shoes 2 being fitted into the fitting recess part and internal air is discharged from the valve part 3 to fold the shoes during the carrying thereof.