SOLD AS ONE POOL STOOL: This listing is for one submersible pool barstool, not a set of two. VINYL LINER SAFE: The Pool Stool as soft-tipped leveling feet that are smooth and soft to the touch making them safe for vinyl lined pool floors (or vermiculite). EASILY ADJUSTABLE LEVELING FEET: Four leveling feet allow an even stool on any surface. They're rubber tipped and soft enough for any pool floor material, including vinyl. CREATE THE PERFECT POOL BAR IN SECONDS: No need to fill these in pool chairs with sand, they come pre-weighted. If you're looking for the best underwater stools for pool use, you've found them! POOL SEATS FOR INSIDE POOL (OR OUTSIDE): These swim up bar stools for pools can be placed and used in or out of water as-is. You'll never get tired of these excellent pool barstools. MADE IN THE USA USING QUALITY COMPONENTS: These pool stools for underwater use are built to withstand sun, weather, and chemicals of any pool or outdoor environment