Retractable (click-style) erasers use a push button to extend and retract the eraser, often have a pen-like barrel and a clip for attaching to notebooks, and are usually refillable so you can replace the eraser when it wears down.
Erasers are made from materials such as natural or synthetic rubber, PVC (polyvinyl chloride), hard rubber blends, calcium carbonate–based compounds, and plastic components depending on the style.
Yes—novelty erasers are often marked suitable for ages 4 and up and commonly include choking-hazard warnings because of small parts.
Smudge-free or block erasers are usually latex-free and designed to lift pencil marks without smearing. They often have beveled edges to avoid tearing paper and may include protective sleeves to keep the eraser clean.
Some erasers include a built-in roller or compartment that collects shavings as you erase, helping keep the desk clean without extra sweeping.
