Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Sturdy on car but bike fasteners broke

I bought this specific rack at Walmart, and the straps work excellent and the rack to car mounting was very sturdy on my 2007 Honda Civic with spoiler. However I had to return the rack because one of the rubber loops that the straps pull through broke while I was tightening the strap that holds the bike down. Very poor construction on the bike to rack straps. Should have been made with metal and have rubber only for cushioning, not entirely rubber.