I gave away this seat ring. My girlfriend had a surgery and had to begin shortly after a long road trip. In Sanitätshaus there were only extremely expensive products and they did not have time to apply for aid in their doctor. Then they went in search of a conventional swim ring for children, but do not get. Fortunately, because now she has spoken with others who are just that recommended because these things slip rubber on the car seat back and forth. She is satisfied with this seat ring 100%, the long drive was no problem at all. Clear recommendation!