Abstract: An adjustable spa headrest has two side surfaces laterally disposed between front and back surfaces. A first projection extends outwardly from one of the side surfaces. A guide rail, positioned for receiving the projection, allows the spa headrest to be positioned in a number of positions. The guide rail includes a horizontal slot, a vertical slot including a number of spaced notches, each notch defined by a pair of second projections, and a spring arm depending in the vertical slot. When the first projection moves to a position between one of the second projections and the spring arm, the spring arm moves away from the second projection whereupon the spring arm applies a spring force to the first projection in a direction of second projection. In response to positioning the first projection in one of the notches, the spring arm secures the first projection in the one of the notches.

Abstract: Among other things, a spa includes a spa shell and a water feature disposed on the spa shell. The water feature includes a ridge disposed in an interior area of the spa shell and having a top disposed near a water line of the spa shell. The water feature also includes a water inlet disposed adjacent to the ridge opposite a main body of water area in the interior area of the spa shell, the water inlet being placed lower than the top of the ridge. In addition; the water feature includes a slope descending from the top of the ridge in the direction of the water inlet, the slope having a patterned top surface configured to interact with water flowing over the ridge, down the slope and toward the water inlet.

Abstract: Among other things, a spa includes a spa shell and a water feature disposed on the spa shell. The water feature includes a ridge disposed in an interior area of the spa shell and having a top disposed near a water line of the spa shell. The water feature also includes a water inlet disposed adjacent to the ridge opposite a main body of water area in the interior area of the spa shell, the water inlet being placed lower than the top of the ridge. In addition, the water feature includes a slope descending from the top of the ridge in the direction of the water inlet, the slope having a patterned top surface configured to interact with water flowing over the ridge, down the slope and toward the water inlet.