Notepad is an erasable reusable, restickable adhesive pad. You can write with any ballpoint pen and erase with any eraser! We made special sizes for iPhone 8 and X/XS, rectangular pads designed for laptops, and yellow squares for everything else: tablets, other phones, water bottle, refrigerator, etc. Notepad. Write. Erase. Repeat. Smaller Rectangle (Laptop): 2.5 x 2.8 inches Larger Rectangle (Laptop): 2.7 x 3.5 inches