This box protects very well the cards that entrusted her on that side no problem. Too bad we can not put more SD cards with a capacity of only 4 SD cards I think it is little compared to the size of this box. The carabiner secures the box in a bag without it will "take the bottom" that's fine, use it keyrings seems absurd to say the least ... Overall it is a good product from the point of view of the protection it provides, some months from the perspective of capability; Finally the price is right and the seller is perfect for shipping.