I recently went on a trip and carried two passports - one quite bulky and one very slim - in my Cedar Passport Sleeve. Both fit with such ease and did not dislodge from the sleeve even once. The magnetic closure holds everything together snugly. I could carry the sleeve in my hand comfortably as well - without worrying about anything falling out. Boarding passes also stayed in the sleeve. And, apart from the great functional qualities, it's cruelty free and looks so beautiful and smart!
Would definitely recommend this to anyone wanting to buy a passport sleeve :)