WONDERFOLDW2 Rain Cover

Does this cover fits the W2 model also ?

Could i use this to try to create a barrier so my 2 year old doesn't try to climb out of the w2 og? does it sit flush against the sides of the wagon?

Does this open in the back or do you have to walk around to the side? Also it is thin enough for you to hear your kids without opening it?

Does this fit the radio flyer with canopy?