I love this pack, it fit all my mandatory kit for HM55 and I had plenty of space left to put additional items in. All the extra pockets on the front are excellent to put my phone, snacks, drinks, head torch, gloves and bluff in. The waterproof phone pocket is far too small to fit an iPhone 11 sized phone in, however it fits a head touch in really well so is much better for this. I use the harriers waterproof phone case for my phone and put it in one of the mesh pockets instead of the phone pocket. The water bottle pockets are a bit tight to put bottles in however this works well to stop bottles from bouncing out. The zip pockets on the side are excellent to put snacks and gloves in for easy access. The body straps are not the best, they are difficult to tighten up or loosen. I found when running the adjustable strap height points pop out and are a pain to put back in if running and I have to stop and remove the pack to sort this out. These could do with having a wider plastic section to prevent this from happening or just fixed to the vest instead. Overall the pack is excellent, the material is nice and stretch, it fits everything I need and then some extra things.