My son Luke was able to return to swimming 3 days using the Drypro leg cover after breaking a bone in his ankle. He swam successfully over the next few weeks and I have no doubt that this aided he’s recovery. Through swimming and showering the cover maintained a 100% barrier against the ingress of water. It’s an amazing product and does exactly what it reports to do. Very cost effect and on time delivery. I won’t be going anywhere else in the future if we need to purchase again.