Most sharks will lose interest after that, plus I dare say the plastic pvc is none too tasty. Would be good if it was absorbent. Haven?t had the chance to wear them much yet, but they?re pretty comfy and warm. It is now on the wall but the handyman said not to put too much weight on it as it will not hold much. Worth the splurge if you wear birks a lot. sound is good. these are great and they come in handy for work because I do a lot of walking at my job. I wore them around the house for about 20 minutes and couldn?t stand it anymore. - Good noise blocker. I was able to compare them to the "real" earbuds they imitate.