Standard Features, Dynamic load tested to 350lbs Snowball 3 Midsize is available in four-point with arms or armless with steel sled base. Four-point with arms Midsize Snowballs stack 4 high on the floor and with the Snowball Midsize Dolly. Frame is 0.875" in diameter. Exposed Back Bracket. Seat is upholstered. Spec Furniture offers a variety of anti-bacterial and anti-microbial Crypton and Vinyls through our fabric supply partners.