My Challenger Pak arrived yesterday, just in time for tourney weekend. I plan on posting a full review next week, but I wanted to give some first impressions after 1 practise round. First, the bag is exactly what I was looking for in terms of comfort and capacity. I'm carrying 16 in the main compartment, 2 backups in the horizontal side pocket, 2 putters in the pouch and a lid in the top. I was really hoping a 71Mold would fit in the horizontal side pocket, but that's no biggie. I've got my folding stool, a pullover, toque, 3 towels, a large ziploc full of odds n ends, snacks, smokes, birdie bag and there's room to spare still. This bag is extrememly comfortable and light on the back. Two fellow masters-aged friends gave it a good fondle last night and they both loved it. One said "If my first round tomorrow goes bad, can I DNF and caddy for you so I can carry it?", and the other, while I was explaining why the bag is on the taller side, finished my sentence with "so i dont have to freakn bend over to pick it up every time!". Designed for function, I love my Chally already!