Koogel Colored Index Cards 3x5, 272 Pack, Ruled Flash Cards for Studying, 8 Assorted Colors, Heavy Note Flashcards for Studying Office Back to School College Home SuppliesThe Forest Stewardship Council

Their not the thickest, not the thinest, they hold up and aren't see through. The colors are nice. I wasn't aware that the lines are on both sides thought. Honestly the best value for the price thought if your looking for color variety. No real complaints, I like em!

Love variety of colors. Good quality.

Function and Excellent price

These cards are perfect for my project, but you should be aware that the paper is not as sturdy as traditional index cards--more like a heavy construction paper. These won't be a good choice if you need something to withstand a lot of use and re-use.

Had such a hard time finding index cards with lines on both sides - can't figure out why they're not more popular. Line spacing is a little more narrow than most, which I like. Might be a tiny bit thinner than some other brands, but they're definitely not thin like paper. I'll definitely be buying more when I run out.

I bought these for the color variety offered. I only wish they came without lines too.

Flimsier than your standard index card which is fine but I hate how close the lines are together.

These are thin but are great to use and love the colors no bleeding and size is prettt goodPrice for good