I'm a kids yoga instructor, and use cards with my classes almost weekly. I'd been using the Kids Yoga Deck for years, and then I finally bought this deck.
I much prefer the Yoga Pretzel deck, because they are twice the size of the others. Also, the Pretzel deck shows cute drawings of different children doing the poses and the Kids Deck only shows unisex stick figures, which is less exciting for the kids. The larger size of the cards, makes them easier for kids to see the pose and hold. They are very colorful and lively, and will be the only cards I use for class now.
Another big difference between the two decks is that the Yoga Pretzel deck contains cards with many yoga poses, and other cards with games and breathing exercises. The Kids Yoga Deck only has cards for poses, and no games.
I really recommend these cards for parents to use at home with their children. Children can use them on their own too, and just mimic the kids on the cards.