"This is a really good product that performs really well however... It would appear that during production the blue legs are sometimes inverted when they are folded. This means that when the folding line is not exactly in the centre it makes assembly incredibly difficult. I would suggest that if you buy this product you first make sure that the top and bottom part of the legs have been folded exactly the same way. When you come to assemble the top and the bottom half you find out why. If the holes do not line up and it is not possible to connect the top and the bottom half in the way that they have been designed."