SIZE: IMPORTANT. This is the biggest question and we suggest using the PooVault for dogs weighing 55 POUNDS and SMALLER. it is hard to make generalizations about what size dog is a perfect fit because of diet, exercise, digestion and how much air is in the bag. We recommend the PooVault dog poop bag storage devise for dogs 55 pounds and lower to be safe. LATCH: The original latch was engineered to remain closed while walking. The latch was recently improved by extending and placed on PooVaults. If it is difficult to open, you might have an OLD latch, which we will replace for FREE, when you e-mail a request to jessicastreib at (@) poovault.com. POOVAULT is a LIGHTWEIGHT DOG POOP HOLDER; YOUR KEY TO DOG WALKING FREEDOM- No more carrying around squishy, smelly poop bags after cleaning up after your pet outdoors. Your new reward for being responsible and picking up after your dog is PooVaults’s convenient and discreet dog poop container- a travel sized receptacle for containing your twisted plastic poop bags. STOP THE STINK; All soft sided dog poop trash solutions do not hold in the odor, leaving the smell of dog waste to spoil your walk. The PooVault is not only lightweight, airtight, washable and leak proof- it effectively contains the smell of your dog’s poop meaning it will truly be out of sight and out of mind. THE COMPLETE SOLUTION TO PICKING UP DOG MESS; A DOG POOP CARRIER THAT ATTACHES TO YOUR LEASH, BELT, OR POCKET- What do you buy for the dog lover who already has all the accessories for their beloved pet? Made from recyclable 2 hdpe, made in the US and at an affordable price, the PooVault portable dog poop bin is the perfect gift for all pet owners.