This are supposed to be the new Arsenal 13/14 Training Shirts and Jackets as well as the new 2013/14 Prematch Top produced by Nike. The Arsenal 2013/2014 Prematch Kit comes in two different versions, one is striped Red/White and the other Blue/Black. The lettering Arsenal features on the back of the shirt.
The Arsenal 13/14 Training Kits come in the same template as the 13/14 Barcelona, ManU and Man City Training Jerseys. While the first Training Kit is red with White/Blue Sleeves the second Training Kit comes in Navy including a horizontal stripe on the sleeves and the back of the Shirt. This will likely be the last Arsenal kits produced by Nike as it's expected Adidas will get the new Arsenal kit supplier from the start of the 14/15 season.