If you are looking to buy the Ikea Tuffing bunk bed frame, then don't.
Seriously, don't.
It is the biggest nightmare of flat pack I have ever encountered.
Sure, it looks pretty. But by god it's a bitch to put together. All because of the webbing stuff. Everything threads through it, and wraps around it, stretching it is a pain in the arse. My wife speaks 2 languages fluently, and she managed to swear in 6 while assembling it.
When it comes to moving out, I will be chopping it up with an angle grinder. It is really not worth the hassle of disassembly. The guy that invented this bit of furniture, must hate people. He is the sort of person that strangles kittens, and steals the last piece of jigsaw puzzles. Probably likes tapioca as well.
Don't buy it. You will hate it.
Edit: 09/12/21
We did chop it up when we moved out.