My husband and I moved cross country. My biggest concern was our sweet indoor cat. He’s a large cat weighing 18 lbs. I didn’t want him to be cooped up in a small carrier for 3 days. This was the perfect carrier for that. I was able to zip the two carriers together. It’s very durable and worth every penny. It sturdy and strong. You can separate the carrier and use it as 2 smaller carriers or as one large carrier. I used it as a large carrier. It took up my entire backseat and I was able to seat belt the carrier in to keep him safe. I put his favorite blanket and toys in the carrier. On one side, i put a small litter box on one side for him. When I would stop for gas, I would give him a bowl of water or food, clean the litter box, give him attention, etc. He’s the sweetest cat, but he gets very aggressive when he’s scared so transporting him was a big concern. We were able to carry the carrier with him in it with no ease or worries.. the carrier was strong. By day 2 of the move, he was use to the car ride and wanted to be let out so I put his harness on him and would let explore when it was safe for him to do so. Since the move, we have still used the carrier. He likes car rides now so he goes on little trips with us. We will take him to the car in this carrier. When we are outside on the patio, we bring him out with us in his little carrier.Tips for a long trip or move with your cat:1. Buy this about a month or so before your trip! Your cats will get use to it and you both will appreciate that. I bought this way before we moved. I set it up and left it out the entire time so my cat would have unlimited access. He immediately got in the carrier and loved it. He would play in it and sleep in it. When the house became chaotic with boxes and stuff everywhere, my cat knew something was up and his world was upside down. This carrier became his safe zone and he would go in there carrying his toys.2. Make sure you have a pet friendly hotel and take your own sheets, blankets, etc.. I was hesitant about letting my cat out in the hotel because of his fear aggression. When he gets aggressive from being scared, I can’t control him. He will attack me when he’s like that so all I can do is give him his space. When I got to the hotel, I made sure he couldn’t get under the bed and there were no other hiding places. I put my bed sheets and pillows on the bed so he would have familiar scents in the hotel. I let him stay in the carrier for a hour so he could study the room. I decided to let him out of the carrier for the night. He did hiss at me when I got close to him, but his behavior wasn’t nearly as bad as it could’ve been. Familiar scents will help your scared cat. In the morning, I gave him his breakfast and tricked him while he was was focused food so I could put him back in the carrier without him attacking me.3. Take a padded harness and 2 leashes. A regular leash and one with a seatbelt attachment. (Buy it ahead of time and put it on your cat so they can get use to wearing the harness). By the second day, he was tired of being in the carrier. He was no longer afraid of the car or car ride. He wanted to explore and be petted. I put his harness and Leash on and let him explore the car when I would make stops. While driving, I would connect the leash to the seatbelt attachment to keep him safe and out of my way while driving. This made the remainder of his trip less stressful on him.3. Buy cat calming collars. I didn’t ask the vet for medicine to keep him calm because of his fear aggression. I was worried that If I gave him the medicine the first day, while it would help during the drive, I wouldn’t be able to give it to him again that night or for the second day so it wouldn’t really help. He would just just be drowsy and confused making him even more scared being in unfamiliar territory once the medicine wore off.The cat calming collar worked great. He was still scared and aggressive at times, but trust me when I say it was not nearly as bad as it could have been.