I recently went on a trip around several U.S. National Parks and I wanted something that would protect my memory cards in all types of weather and situations. I went from Yellowstone and Yosemite to Zion and Death Valley (and more) and along the way, my bag was seriously mistreated for different reasons (i.e. pushy tourists, airports, extremely hot weather (yes, Death Valley, I am talking about you; 46 celsius. Phew!)) and I was completely confident that my cards would be protected.
The case is compact and holds the cards securely with space for 4 cards. It operates on a push-button opening and has been well designed. It may be a little big for some people (even though it is only 4x3 inches) but I personally like that, as any 'shock-impacts' inflicted on the case would be absorbed by the material used.
Considering how many photos I took and that it was a once-in-a-lifetime experience, the case was the best buy and an investment to protect my memories of an amazing holiday.