This is most definitely NOT a crate that a dog that  weighs 70 lbs nor 50 lbs can fit in comfortably; I have both.  My 70 lb. dog could not fit through the door, and my 50 lb. dog barely fit through the door and could barely turn around to lay down.  The idea of a light weight pop up crate is absolutely great, however, there is no way that this is the correctly sized.  The  LARGE crate will fit a Sheltie size dog with a bit of room to turn around in. Who decided that a 70 lb. dog could fit in this crate is not familiar with dogs and has misrepresented this crate!  I would buy a larger Pop crate in a minute since I travel a lot and compete with my dogs.  Very disappointing!