UPDATE: I received a response from the company that the sagging was due to the central hub (at the top of the tent) not being pressed down. So, I set up the tent again, making sure to activate the hub. This did improve the sagging issue significantly; however, I still feel that the long sides of the tent do need more support (ideally in the form of vertical poles). On second setup, I also noticed that there was hook at the top of the internal divider curtain that can be attached to a loop on the ceiling of the tent; this helps with the interior sagging issue. These two things were enough for me to reclassify this from 2 stars to 4 stars. The tent is actually usable now, yay! If they added more vertical support to the long sides, I feel this could be 5 stars. ************** I see all kinds of glowing reviews for this shower tent and I just don't get it... did I get a bad run? First of all, using the tiedowns is a must; this tent will take off (or just fall over) at the slightest breeze. There was a light wind when I was setting it up; I almost threw up my hands and gave up just then, because the tent kept falling over in the breeze and collapsing in on itself while I was in the middle of getting it staked. Once I got the bottom stakes and the tiedown stakes in, I was doubly-disappointed to discover that the tent was not taut in the slightest. I double-checked my staking and everything was tight. I think the tent needs additional poles in the middle of the long sides to provide support... without those, the fabric just sagged and was blown inward by the wind (check out my photo of the interior divider panel). I am just really disappointed and I can't figure out why so many people are giving it a 5-star review. Maybe they never actually set it up outside? Ultimately, I didn't even put the rain fly on or test my portable shower in it because I was so frustrated with the structure/design of the tent.