Perfect weight; fairly soft material and can convert from backpack to jacket in just a few seconds (and vice-versa)!
I take this everywhere when I know it will get chilly in the evening and can use some extra pocket space for stuff during the day. Great for hiking, long walks, amusement parks, zoos, all-day shopping trips, camping, beach BBQs, museums, etc.
I got hot easily when moving around so it is nice to be able to quickly convert the hoodie into a backpack and then I can throw my wallet, keys, and other things into the pocket and avoid them clanking around in my pants pocket. It will also hold a small water bottle if needed. I don't put my phone in the pocket as it can be difficult to reach into and grab it when needed in an instant. So that stays in my pants pocket while I walk around. Nothing has ever fallen out but you do need to be a little careful when taking off the backpack configuration so that nothing falls out of the pocket as it does not have a zipper or button for the pocket.
If I would recommend anything, it would be to add a velcro enclosure for the pocket to keep things in place if you do happen to take off the backpack and accidentally turn it upside down.