Great costume for the price! The fabric is fairly thin but because it is a full piece it can get a little hot. Also the white part on the torso is kind of see through. In the back there is a slit which you use to put on the costume like overalls but only has two strings at the top to tie it off leaving a gaping hole. Easily fixed with a few small velcro stickies that you can get on amazon for $3>
The size is listed as an Adult Standard Size, I'm assuming it's measured against the average height for an American male standing at 5' 10.2" because I am 6'2" and it's a pretty snug fit. Tad uncomfortable but suitable for what I need it for. It leaves about 4 inches of bare skin from my ankles to the bottom of the pant legs.
I bought two one for myself and another for a friend who is about 5'11 and it fits him perfectly. The costume tag says to hand wash and flat dry, but I machine washed it on cold and hung it up to dry without any noticeable damage or abrasion to the fabric. Successfully got alcohol stains and mix drink stains out of the whitest parts on the costume.

As for the mask: The ears have two frame wires running along the entire length so their position and angle are adjustable. Inside the mask you have two more framing wires that help give the mast some rigidity and structure. There is a longer velcro strip on the back, making it easy to take the mask on and off. For the eyes you have black wire mesh that measures about 4 inches, and if you get the mask on perfectly they give you a pretty good field of view vertically but not so much horizontally because of how the mask fits on your head. The mask fabric is a tougher fabric and the tag says it is machine washable and dryer safe (washed twice already, no problems seen and successfully got lipstick marks off the white cheek fabric). The whiskers on the mask are black pipe cleaner wires with fabric on them. Don't look the best up close but their angles are also easily adjustable and from a distance they look great.

Great product, I am very satisfied with the price and the quality. If you want a better product be prepared to pay over twice as much for a slightly better costume or renting an all out bunny outfit for a lot of money per day.