JYZCOS Inflatable Unicorn Costume Halloween

Okay i have read alot about the height of this costume. Whag about width wise? Whats the largest size it can fit without it clinging to anything?!

I am really having problem here. i was told that there is a power bank i could buy instead of using batteries. please post a link to the one i need.

To use the restroom I have to take it off?

Can you sit in this costume? I thought about getting this for my office Halloween party but i am at a deak all day. Will this work?