manufacturing quality: good
. very good system of straps, ergonomic and comfortable: with a padded lumbar support. the inside is covered with mesh (good for sweating)
. the simple but solid asez seams with some reinforcements on top
. lower binder is reinforced, plastic coated
. the flap is fleece-lined
. the top handle is secure (sewing + nail)
. Reflective patch (on the bottom front of the bag and on the straps + reflective stitching on the sides)
My son is very happy with this binder. it is simple, strong and relatively light.