Polyurethane Custom Fit-- Compatible with Aria AR 2014-2018, Aria NXT 2017-2022, Envoy KK 2014-2018, Envoy NXT 2014-2022, Sovereign II 2014-2018, Sovereign IIN 2019-2022, Grandee GG 2014-2018, Grandee NXT GGN 2014-2022, Prodigy H 2014-2018, Prodigy HN 2019-2022, Jetsetter JJ 2014-2018, Jetsetter JJN 2019-2022, Jetsetter LX JTN 2014-2022, Triumph TRHN 2019-2022, Vanguard VV 2014-2018, Vanguard NXT VVN 2017-2022 Enhanced Comfort- The 77228 aligns with natural curvature of the neck, providing support while relaxing in spa. Reduce muscle tension for a more comfortable soaking experience Easy Installation- To install new pillows, align the pillow facing up, slide one end onto the spa retainer, then stretch and slide the other end into place. No complicated tool required Built to Last- The kit made of premium polyurethane and plastic. Feature waterproof, heat, and corrosion-resistant, avoiding little pieces of pillow floating in the hot tub Aesthetic Appeal-- With its cool gray color, the new pillow replaces the dingy, cracked, or waterlogged one to add visual appeal. Enhance the overall look & help your spa look new again Compatible with Aria AR 2014-2018, Aria NXT 2017-2022, Envoy KK 2014-2018, Envoy NXT 2014-2022, Sovereign II 2014-2018, Sovereign IIN 2019-2022, Grandee GG 2014-2018, Grandee NXT GGN 2014-2022, Prodigy H 2014-2018, Prodigy HN 2019-2022, Jetsetter JJ 2014-2018, Jetsetter JJN 2019-2022, Jetsetter LX JTN 2014-2022, Triumph TRHN 2019-2022, Vanguard VV 2014-2018, Vanguard NXT VVN 2017-2022