Charcoal Flat Pillow The Charcoal Flat Pillow fits certain hot tub brands, including Clarity Spas, Contractor Series Spas, Down East Spas, H2X Swim Spas, Legacy Whirlpool Spas, Michael Phelps Swim Spas, and Twilight Series Spas. The rectangular, flat shape of this hot tub pillow fits easily onto the... See More