The 2018/19 Arsenal home shirt is made by Puma.
The Puma logo and the Arsenal crest are slightly deformed and out of scale on the Fake shirts.
The size square inside the neck leaves no spaces between the upper white part and the bottom red part in the Original shirts, while there is a slight space between the square and the white part on the Fake shirts.
The Fake shirts are darker, on the sleeves and on the main red body, than the Original ones.
The Puma “Authentic Product” black tag is put on the left bottom on the Fake shirt, while it's actually on the left side in the Original one.