Using a zipper to close a bag is as easy as it gets. The multicolour colour looks quite neat.
From Amazon
MONRAY NGS GINGER TRAINERS - Suitcase for Laptop Computer up to 15,6'', Notebook Carry Bag with Compartments and External Pocket, Colorful Sneaker Print
ShopBetter24
Laptop Case NGS Ginger Trainers 15"
Shopaide
Laptop Case NGS Ginger Trainers 15"