📚 Study Smart, Not Hard! Crafted from 200 GSM cardstock for long-lasting use. Unruled cards for limitless creativity and note-taking. Generous 3x5 inch size for all your brilliant ideas. Includes 3 detachable rings for effortless organization. Elevate your study game with 5 vibrant colors! 200 GSM thickness 150 durable cards 3x5 inch size The Turron Coloured Index Flash Cards Tray includes 150 unruled cards in five vibrant colors, designed for durability with 200 GSM thick cardstock. Each card measures 3x5 inches, providing ample space for notes and ideas. The set comes with three detachable rings for easy organization and is perfect for students looking to enhance their study materials.