Using a zipper to close a bag is as easy as it gets. It consists of two different materials, one of them being neoprene.
From Viking Direct
DICOTA Laptop Sleeve D31188 15.6 " Synthetic Neoprene Black 40 x 2.5 x 27 cm
Yes Infotech
Perfect Skin - 15-15.6in Notebook Sleeve - Black / Synthetic Neoprene
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