After both zips on my old bass sack broke I was looking for a bag that was sturdy, well-padded and didn't cost the Earth.
I can safely say the Gewa ticks all those boxes. It has ample padding, lots of handy pockets for stashing your bow, rosin, pickup, cables, sheet music and so forth; a good number of handles for lifting your bass in and out of cars etc.; and the straps for carrying on the back are comfortable and well-padded. The castors mounted on the bottom are a nice addition but I haven't found a use for them yet I must say!
I gig 3-4 nights a week and the bag has served me excellently so far. I would definitely recommend this product!