Bed Tent Twin Net.
The poles must arch over others to fit securely in the pockets. Secure the tent to the bed, if necessary. That is going to keep it in place.

Bed Tent Twin Toddler

Bed Tent Twin Black

Bed Tent Twin Boys

Bed Tent Twin Custom

Bed Tent Twin King Size

Bed Tent Twin Light

Bed Tent Twin Purple

Bed Tent Twin Simple