This particular set of sleeves comes with 12 credit card sleeves and 2 passport sleeves. Some of the sleeves have openings on the ends and some have openings on the top.
These sleeves are said to be durable, tear proof and waterproof. My first impression of the product was how sturdy the material was; I had been concerned that they would be flimsy and wear out easily but they are not flimsy at all. The inside of each sleeve has a shiny metal type covering that I assume is what blocks the RFID.
Overall, I think these are great to have if you keep loose cards in your purse or if your husband is like mine and just carries the cards that he needs in his pocket.
View/Purchase Aerb RFID blocking sleeves
I was provided with this product to facilitate a review. I was not compensated in any way. All opinions are my own.