As clearly stated in thw description these are not meant to be used for chewing. I went out on a limb and hoped they might work with a moderate to aggressive chewer. Sometimes even just a soother... THESE ARE NOT FOR THAT AT ALL. They can be used for tongue depressing, these can be used for even feeding also as we ordered the softer nore flexible 'bookmark' version also and they were more bendable for feeding someone like my son. Very creative... JUST DO NOT BUY THESE THINKING THEY WILL WORK FOR CHEWIES BECAUSE THEY WONT. READ THE DESCRIPTION AND TAKE MY WORD, THE DESCRIPTION IS CORRECT. I do not have a fidgetter as my son is not able to grasp objects long and has cerebral palsy but they do resemble a ruler and are attractive. Beautiful bright colors. Textures are perfect just like all ARK products. We do not have much for these now but have tried them so they are tucked away and we will pass them onto someone that can use them.