I'm so glad I found and ordered these bags!!! I read some of the negative reviews and got nervous but went for it anyway. I have a 50# boxer, beagle, pit mix.I've tried many different types of bags and honestly I can say for the price and the way they are all on one roll these are already my favorite, after one day!!!! Never have I been so happy about poop bags!! I normally buy mine at a local discount store paying maybe $3-$5 for a pack of 6 rolls, so I'm guessing 600. They're always cheap and thin (the ones all the way to the right in the picture).One day at Petsmart I found the gray ones (all the way to the left) on clearance, normally cost something absurd like $30, but were on sale for $7. They are large and VERY thick with a pocket on the bottom for extra grab support. They are good for the first morning poop but almost too much bag just to put some turds in, it just seems wasteful.These (pictured in the middle), are perfect size, a bit bigger than the cheapo bags but smaller than the other ones. I tried poking my finger through to test it and they're actually pretty strong and definitely thicker than the cheapo brand. Thinner than the gray ones, but again those are to much plastic and wasteful.Tested them this morning on the first poo of the day and they worked just fine, plenty of room to tie them off and actually contained odor better than the expensive ones. You can still smell it, but I was impressed. Strong enough to use for cat litter but I don't think the bag is wide enough so I wouldn't buy them for that. In one photo I have my hand in the bag spread out so you can see there is plenty of room, I have large lady hands, I could see maybe a man with large hands having a but of an issue, maybe.I LOVE that they are on one roll!! Less waste and no longer will I have a roll take off and unwind on me lol. I usually keep about 5 bags tied to the leash at all times, just incase I'm not the one to walk him.What a great find!! I will never have to waste money on other poop bags ever again!!Update 6/9/17- definitely will buy these again, to the people having issues getting the bags out of the box pull straight up not sideways and you'll never lose the bag in the box.