The closure is made super-easy with a zipper. If you prefer black bags, then this should you just fine.
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Laptop Case Dicota D31439-RPET Black 15,6''
Shopaide
Laptop Case Dicota D31439-RPET Black 15,6''
OnBuy
Dicota Multi Plus 15.6 Messenger case Black
Compadvance
DICOTA Eco Multi Plus Scale 14-15.6".