Easy to use, and good size if you want to put food, and some puzzle toys/kong type of food toys, too. I travel alot with my dog/puppy, and I keep this in the car for on the go feeding. As a puppy he needed to be fed 3-4 times a day, so it was handy to have this in the car. Also, he would go to Pupcare a couple times a week, and this was his lunch box. He is a voracious eater, so I feed him outbod slow feed toys like Kong type toys, etc. Its fits a travel bowl nicely in the bottom, and I put the clip through the loop of a water bottle, so it's a complete set up for my pup. I love it!! Highly recommend! I have not had the experience some reviewers have had with greasy residue. Mine appears to be strong waterproof, rip resistant material. And also, I leave this bag in the car, and the photo has access to it, and has never chewed, or otherwise gotten into it. So I believe it is fairly airtight or something. My pup is a husky, so he eats quite a bit, and I feel like this would quite a bit. Esp cause I put toys in the bag, too. I've gone on longer trips and filled it up quite a bit, and it held alot of food. If you dont have that much to put in it, u can roll it up alot, and it's a smaller bag. So it's very versatile. I feel like this will last a very long time. I would, and have, recommend this to my friends and family.