One speakers who forgives only 1stern, I can not agree absolutely. If you read and understand the instructions, the installation is no problem at all. In our Chariot Cougar 1 they fit in wonderfully. And of course, no straps are there because they strapped the baby so logically with the Gurten the trailer firmly. And as alleged sitting the child absolutely steep, is nonsense, it is easier Sitzpositzion. The mat is super soft and thus serves as an additional suspension (although the Chariot is already sprung anyway). Our son (5 months), hates stroller, but loves this great mat. Absolute buy recommendation!