Limited Edition of 50
 
This medium size backpack has plenty of room with a big inner pocket, separate section for a 15'' laptop, a front pocket, and a hidden pocket at the back for valuables. 
 
100% polyester
Dimensions: 16.1″ (41 cm) in height, 12.2″ (31 cm) in width, and 5.5″ (14 cm) in diameter
Maximum weight limit: 44lbs (20kg)
Water-resistant material