This listing is for 3 phot r saddle sandbags this sandbag has two wings this allows you to drape it over light stand legs and other studio equipment they are used for securing the bases of light stands from blowing over designed to secure and balance your lighting stands and other vulnerable upright equipment in windy locations and reduce the risk of falling when knocked in the studio each side of the bag has a hand strap for easy handling and hanging on hooks each side has a double zippe