Does chewing on pen caps and pencil erasers sound familiar? ARK's Krypto-Bite Chewable Pencil Toppers are a safe solution for kids and adults who need to chew. Chewing can be a very effective way to help calm, self-regulate, and focus, so these chewy tools are a perfect pairing for homework, note-taking, and more. They also add extra weight to the pencil for increased hand awareness and for helping the pencil comfortably rest in the web space between the thumb and pointer finger. They conveniently fit over standard HB pencils. Length: 7cm. They come in three different toughness levels: soft (navy blue) - recommended for mild chewers -, XT for "Xtra Tough" (turquoise) - recommended for moderate chewers - and XXT for "Xtra Xtra Tough" (royal blue) - recommended for avid chewers.