its ok but for very little outlay you could improve it .what s this thing about it being lightweight are humans getting weaker !!!!
1. yes it is lightweight as you well know it is made of flimsy plastic .2 how would i know if it is durable i have only had it a few weeks ! 3 is it well deigned? only up to a point how hard would it be to fit a back on to it . I have it on an outside window facing into the room and when the sun comes round i get a false reading of the ambient temperature.