Strengths: looks good,that and the lifetime warranty was why i bought it.
Weaknesses: piece of junk. i've had 2 of these things. both of them broke. in both cases welds on the rack gave way-- and i do NOT put heavy loads on them. in fact, the heaviest thing that this piece of junk ever carried was a laptop computer in its case (perhaps 9 lbs) for a distance of 1 mile. i did strap it on very tightly with several bungee cords, which apparently were stronger than the welds. wow! what a product!!!!