Universal Leaning Post Backrest. Taco Marine's Universal Leaning Post Backrest is designed to fit the Neptune Premium, Neptune II and most standard leaning posts available in the market. Arms fold for easy and convenient storage.. Features:. Universal design to fit Taco Marine's Neptune Premium, Neptune II and most standard leaning posts. Arms install at desired width to fit rod holders. Cool, white, easy-to-clean, cushioned backrest. Arms fold for easy storage when not in use. Hardware included. 3 year limited warranty. Made in USA