Instruct: Classify a given Amazon review into positive or negative sentiment.
Query: Tough to assemble

I expected that the legs would not be on; but I never expected the difficulty I encountered assembling the rails and mat.The instructions have a warning:"3 adults in good physical condition are required for the following assembly. Wear proper shoes and maintain balance to prevent a fall." Good advice, but there is no way of knowing the problems you can encounter until you get it out of the box and see the assembly instructions.I got the rails and mat together; and it did take 3 adults.I never could get the safety pad to fit.I wouldn't buy this again.