Strong adhesive, make sure sticky notes don't fall off, and removes cleanly as well.sturdy stickies don't tear apart, curl up or spill ink. colors have Dark blue, light blue, dark purple, light green, fluorescent green, light yellow, fluorescent yellow, fluorescent orange, orange red, rose red. (Bright memo pads making your message more noticeable).Can be pasted on the wall, blackboard, computer, desktop, refrigerator and almost all other smooth surfaces. 50 sheets per pad.