【Compatibility】Compatible with HELIX 7 series products ALL models 【Function】Protects units when they are not in use. 【Quality】Made of thick silicone, this cover owns great retention of flexibility. So, even in extreme heat or cold, it is still easy to slide on and off. Also, silicone highlights its strong sealing capability and good resistant properties, effectively protecting your unit from water dust, sunrays and collusion. 【Note】Better not for use while trailering boat. If traveling at speeds above 20 mph, remember to remove this cover from the control head. 【Friendly Service】 A full return is available within 30 days if you are not satisfied; we also offer a 12-month warranty from the date of purchase to make sure that you have good experience.