The 23L Ultimate Backpack is a new version of the 24L Original Backpack with some changes like weight, white interior, shoulder strap, and Laptop compartment location. It is also available in two colors, black and our unique Ice Sheet.
The new 23L Ultimate Backpack does not include the secret pocket, fits up to 15.6" Laptop (16" Mac fits also) and it weighs 1.5 kg, while the 24L Original Backpack fits up to 17" Gaming Laptop, has a secret pocket and weight around 1.95KG.