Because of the negative reviews, I thought, well, if it's no good... But hey! Brilliant, I'm really impressed. I bought it for my dog field (formerly a dog club)! I've set up agility there. Now I'm going to buy another one for home, for when I'm out and about.
Nice treat bag. The most important thing is that the inside is attached with Velcro, and you have to pull it off the Velcro to turn it and secure it, so treats don’t fall out during active use or get wet in bad weather. I just couldn’t figure out how it worked, and only a tip in another review about the Velcro changed my opinion. I recommend it. It would be good to have a more detailed instruction manual for it, though.
I've used this for 2 years now and it's perfect. It's not too big, but still has plenty of space for treats and dog bags. The practical carabiner is great—we use it for a clicker, whistle, etc. This always comes with us on walks.