Since we call three guinea our own, I had had enough of this small animal plastic boxes, where more than 1 pig reinpasst and can just rotate once on its axis. Just when my Fellnasen had a mite infestation, had all 3 at the same time doctor. Where a dog fits in, fit 3 Pigs purity I had correctly estimated. Processing is high quality and the bag can be folded easily and disassemble. Also, the inner floor can be easily taken out for cleaning. My 3 pigs weigh about 3 kilograms it is perfect. The two carrying options (hand straps and shoulder strap available) are super practical.