The formed saddle-style seat is 3 1/2” thick with thick pebbled vinyl. The seat is height-adjustable. The support for the seat is a strong double-braced plated steel tripod with widely-placed rubber feet. Perfect to give a stable, secure seating that is highly resistant to tipping over. Seats come in your choice of black with orange stripes, orange with white stripes, white with blue stripes, or navy with red/white stripes.