flash cards for kids. 1. Custom logo 2. Confirm to EN71-3 3. Poker size 4. High quality, fast delivery flash cards for kids, with your logo and design on cards and box.Your logo on both sides of cards and packing box will be made for your specially.Details are following.Material for cards:paper. We have different paper that you can choose. There're 270gsm, 280gsm,300gsm, 320gsm, 330gsm and 350gsm ...