Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Helps out the lower back while paddling

I have purchased two of these chairs. I originally bought one for myself and loved it. I bought one for my daughter recently as well. The nice thing about this chair, is its ability to be used with both a contoured tractor seat and a conventional web seat. The seat fits best on a tractor seat if the stiffeners are removed. It would be nice to have a snap down strap on the back of the chair connected to the bottom front. This could be used to fold and hold down the seat during portaging. The upright seat back blocks your view during portages. The straps can be pulled tight to gain this effect, but requires a repositioning of the seat back at the end of the portage.