It's all up to you. The clear plastic piece on the thong of the flip flops keeps the thong in shape. Some find it uncomfortable so they choose to remove it.
Some suggest that cutting off the plastic may actually cause more discomfort as in rope burn. So just wear them for a few minutes a day at first, gradually increasing the wear time.
Flip-flops are the number one choice for summer footwear, but their lack of structure means they can cause heel or arch pain.
Here are a few tips on how to keep your feet from being sore this summer shared by Cbslocal.com.