I have had my metal one for a year. It has been used by many foster buns and has a wee wooden shelter attached so the have somewhere warm, dry and enclosed to hide in. It is great being able to move it around easily to fresh grass patches, it is really high so they can have a good stretch and it came with tent pegs to secure it on the grass.
I have used clothes pegs to attach a waterproof blanket to the roof. It works well for sun or rain!:wave: