Review on 🔒 Secure Your SUP with Airhead Suction Cup Tie Downs - 2 Pack by Jason Bolden

I bought these to mount a detachable tent on the roof of my van. They work great but they have a clear plastic suction cup - I suppose this should be kept clean and protected before use. It was hard to tell there was plastic in there. I don't really like reading instructions so I could probably just read through to undress. Many reviews have said they don't work and I assume this is because the plastic liner was left in place.