Instructions were not clear, but I figured it out. The adhesive on the rubber rung covers is worthless. My girl finally just took them off as they kept slipping off when she tried to climb up to the top bunk. I bought these because my girl is heavy (194) and they were supposed to be rated for 330 top bunk/400 bottom bunk. We got them in November, and she has alternated between the top and bottom depending on whether she is too tired to climb up. BOTH of the bunks support bars are curved in (bowed). Oh, and the support brackets they provided were C brackets and if you have baseboards, you won't be able to use them. It makes me sad because I wanted her to have something nice since her sister went off to school, but now 4 months later they are trash.For the price it was much sturdier than expected! It will definitely take two people to put together and plan on at least an hour for assembling. All in all a pretty positive experience, the directions are clear, but you will need to plan your evening accordingly when you put it up.Most of the precautions that I am listing below should be put at the beginning of the instructions by the manufacturer. Don't take these precautions as a negative comment on the quality of the unit. They go more to the directions/instructions being lacking necessary helpful detail. With the current instruction set, it is definitely necessary to be cautious.This unit will be satisfactory for your kids for years. (I'm presuming adults would rather sleep in an individual bed.)Good quality material. Good quality bolts, screws, etc., as long as they are all there. Check the quantities of each bolt, screw, washer, etc., BEFORE starting to assemble. Also check that all items of a single kind are actually identical. (Got one machine screw with a smaller-than-the-others head. The head slid right through the washer. It was made that way.)Have a raised flat surface, 4' x 4' minimum, available to work on. (Or stop frequently to rest your sore back! lol)It is easier, and helpful, to mount some of the machine screws on the supplied hex wrench BEFORE attempting to insert in place. That aligns them when they have a long travel through spaces you can't see through.Two people are a MUST to assemble this.Some pieces (the 4 end poles) must be oriented properly. It is not easy to see this and they CAN be put together wrong. The bed racks can go on regardless of the pole orientation; but the side guards--not so much. That makes it very time consuming and frustrating to have to do the tear down and re-assembly.Once together, it is a very satisfactory unit.We love our bunk beds, we purchased 2. The only complaint is that on one of the bunk beds the screw holes on the ladder were on the wrong side, we rigged it to make it work for us but other than that it's a nice bunk bed.Right out of the box the assembly wasn't too bad but several holes were just far enough off to make putting the bolts in a nightmare. A few spots were completely welded upside down (such as a ladder spot, several in a row correct and then 1 upside down, then more correct) ultimately the few that were messed up were not threaded spots, just the flat tabs where a few pieces junctioned, and weren't going to affect much as only the ladder one was in a weight bearing spot, so I just used a metal drill bit to put the hole where needed and it assembled it. The issue was it was a little rickety right out the gate, but seemed solid enough for my small 5y/o and my average 7y/o. I was wrong. Within just a couple months the ladder pieces broke (ironically the ones that were "correct" to start with broke first) I was annoyed but used some metal screws and 1x2s and just filled the gaps, since the rest of the bed was holding up OK. Fast forward to now, exactly 6months after purchase, and the bed rails are all sagging despite nobody over 60# ever even sitting on the beds, the safety rail on top snapped off the metal at one end (again ironically one of the "correct spots") the ladder came disconnected at the bottom, creating a serious Hazzard, and the whole thing swayed like a hammock every time my sons climbed in either bunk. I tried tightening the bolts to no avail, they just loosened back up the next day. I finally decided to give up and buy new wooden beds instead. This was a waste of money and could have been a serious problem if I didn't tuck them in each night and notice the things breaking. Don't waste your money. People may not have the issues I did at first and write a great review on the first day or week, but I'm telling you, 6 months in I'm having to toss them with only use by children under 60#. The only parts that survived were the parts I ended up fixing. This bed and its loft counterpart are both trash.Absolutely love everything about this bunk bed. It did take at least 3 people to put it together easily. I would not want to put it together alone. Call on your buddies to come help you if you don’t want to be frustrated. My husband, myself, and my oldest daughter got it together within a couple hours. We were missing the steps to the ladder but the company sent them to us right away. The bed is very sturdy for my girls who are 11 and 12. It doesn’t take up a lot of space which allows them more room in their bedroom. It has good space underneath if you have under bed storage containers you’d like to use under them. We are very happy with this product and the price is also a huge bonus.This was a great buy and the kids love them . Very easy to assemble and sturdy .It took a little over an hour to assemble, but overall it was very easy to do so, and all the pieces were accounted for.The stairs have this unevenly cut rubber like material that you place on them, and it didnt stick very well on it's own.I ended up having to basically secure it with a jb weld type of stuff that my friend got. But over all for a twin over twin bunkbed it wasnt that difficult to deal with.