Pop Up Mosquito Nets and Domes are completely self contained without the need for any additional supports. Consequently, they can be used on beds, on the floor or on the ground outside with the built in frame providing support.
Suitable for travellers where flexibility and versatility is important - particularly if you plan to sleep outside in an area where mosquitoes and other biting insects are a problem. However, they're not really suitable for lightweight backpacking because of the extra weight and bulk of the pop-up frame - a simple Wedge Net would probably be better.