Boating Essentials - Cone-Top Pop-Open Key Float and Boat Registration Holder - BE-GE-52286-DP Keep your boat registration and fishing license accessible and dry with this one-top pop-open key float and boat registration holder from T-H Marine. Product overview: Floating Registration Holder & Key Chain Pop-open top Keeps boat registrations and / or fishing licenses accessible and dry Watertight Chrome brass bead ring