A general rule of the thumb is: if you can fall asleep with these items on, you can astral project with these items on.
Astral projection is all about putting your body to sleep and keeping your mind awake. This results in desynchronization between the mind and body, allowing your consciousness to temporarily separate from your body. However, since you are attached to your body you must also get really close to unconsciousness as well. The threshold between waking and sleeping is where you will part hands with your body (temporarily).