I help manage the local card shop, and not only are these Ultra Pro Penny Sleeves extremely helpful, but absolutely necessary! Being clear and smooth, they're great for protecting all of single cards, whether you have a single copy or multiple copies! We have been able to fit up to 6-7 duplicate cards in a single sleeve! They're also very durable and extremely affordable!

Ive ben using these for like 3rs now, They fit great, They fit in allmost all binders. I haven't had I single problem with this product.