Post-it Extreme Notes,  Great for Tough Conditions, Recyclable Box, 3 in x 3 in, 12 Pads/Pack, 45 Sheets/Pad sells on Amazon.  I think the price is very good. Please read some of the reviews and see what people thought of the product. Do check how you might qualify for a free shipping offer if available.

  • 3 in x 3 in, 24 assorted pads/pack in Orange, Green, Yellow and Mint
  • Water resistant, durable and writable, removes cleanly
  • Made with ultra-strong dura-hold paper and adhesive
  • Sticks in hot and cold environments
  • Use indoor/outdoor and may be applied to dry surface to hold in wet conditions
  • Not recommended for use with gel pens.
  • Not recommended for use on paper and delicate surfaces.
  • For best results, use with permanent markers. Post-it Extreme Notes are bleed-through resistant for permanent markers.