Post-it® Super Sticky Z-Notes hold stronger and last longer. They have 2x the sticking power of Post-it® Original Notes so you can be sure that your message gets through. Perfect for vertical and hard to stick to surfaces, these Z-Notes let you scribble down your thoughts in a flash - great when you're on the phone or have your hands full. These Canary Yellow™ super sticky Z-notes are super strong, super versatile and designed to make your messages stand out. Made with PEFC certified paper, sourced from certified, renewable and responsibly managed forests, with a 60 % renewable resource adhesive from a plant that regrows annually.