What a great item!! Picture Keeper comes in many sizes. Is your phone slowing down due to too many pictures? Are you afraid to lose phone and pictures, then I suggest Picture Keeper. Here is link to their website with great deals until 8/31/16:
I used this recently with my trip to Las Vegas, #Disneyworld for adults, after taking many pictures especially of the #Bellagiofountains they are amazing!! I think I will have to pay more attention to the fountains and music located at #Epcot.
Just another helpful hint to help with your travels. Enjoy!