Review on 📱 2Pack Phone Card Holder - Elastic Lycra Stick on Wallet with Double Pockets - Credit Card ID Case, Pouch Sleeve - 3M Adhesive Sticker for Back of iPhone, Android Smartphone (Black & Purple Marble Double Pocket) by Eric Ramen

I was afraid it would stick to my otter's back but I held it for 30 seconds and it stuck very well! It's been hanging on my phone case for months now and hasn't come loose! Plus, it matches my purple otter case! Two of these are included in the scope of delivery. So if I buy another phone or phone case, I still have a cardholder available! Hooray! I have 5 cards in it and a $20 emergency bill folded up and hidden in the front slot. The stretch is great!