You get a cover in the 660 box but you need an extra one to cover both in-car and bike connections when neither is in use. If you've the 660 on the bike you need a cover for the in-car mount and if you the in-car mount in use you need it for the bike. If you've neither in use you need to cover both and so one cover is not enough. Post free it's a bargain and fully effective.
Good piece of equipment but much cheaper from other sources (even direct from Garmin). Too late for me to cancel my order but at least I know not to buy anything from PentagonGPS again ... be warned.
Perfect solution for a simple problem: to provide a weather protection cover for my garmin motorcycle mount, when I acquired a second motorcycle. Prompt delivery, very good value, and problem solved in good time for my current vacation. Thank you.