The stitching around the 'mouth' of the pouch is not finished properly and opening and closing the pouch around the Macbook Air is awkward in that it takes both hands using fingers and thumbs pulling and stretching the corners in turn to perform an operation akin to putting an old fashioned pillow case on a pillow as the closure must be pulled and stretched over each corner in turn to close the otherwise open 'bag.
The stretching of the material and the open corners to achieve this suggest to me that the pouch will fail quickly and I am also guessing this is why the 'mouth' of the product is so heavily stitched in such an ugly way as I suspect this is their 'compensation for a bad initial design'. The corner of the 'mouth' is already showing that the stitching is coming undone with two threads already loose after being used for one week!
When the pouch is closed, a band of overlapping (double thickness) 'wetsuit like material' is stretched across the underside and the open edge of the pouch catches on other edges as, for example, one slides the pouch in a briefcase or backpack. You will notice that the images chosen by the sellers do NOT show you how this operates which makes one a little suspicious that they are aware of this shortcoming and perhaps have chosen to hide this 'feature'. The mouth quickly becomes rather open/saggy and correspondingly unsightly.
Whilst the pouch works well enough, the absence of a properly designed opening/closure to the device makes an otherwise potentially attractive accessory seem ill designed and frankly a little ugly.
Summary of summary:
It is not slick, but It works.