I had a Gelert one with the same bladder. It wasn’t good for a number of reasons-
1- The bite valve fell apart easily and wasn’t easy to bite.
2- The hose grew mould a lot quicker than a camelback one.
3- The straps were flimsy, and the waist band came off after a few months.
4- The zips blew soon after that and the seams on one of the front pocket were coming apart.
I use Dakine bags these days as they are much higher quality and very tough- chunky zips, good stitching, better quality buckles and a nice bladder. These are about £60 for something like the Gelert one but one of mine is 5 years old now and my Gelert lasted 6 months and cost £20, which isn’t good maths.