Carbon fibre corners are now an optional upgrade on Coast Spas’ line of hot tubs that have synthetic cabinet finishes. A specific colour-matched corner is available to accentuate each cabinet to help break-up the hot tub’s traditional box-like shape by giving the centre of the corner profile an hourglass side profile. Each corner provides a tasteful contrast against the smooth acrylic and textured synthetic cabinet finish. Three exterior lights are also integrated into the top of each corner to match the hot tub’s interior lighting (when activated). At night, the lights automatically illuminate via an included ambient light sensor.