THE BLOCCS WATERPROOF CAST COVER ARRIVED IN PERCFECT TIME FOR ME AS I JUST HAD TO HAVE SURGERY ON MY FOREARM AND THE DOCTOR SAID I COULD NOT GET IT WET FOR SIX WEEKS. I DREADED THE THOUGHT OF NO SHOWER FOR SIX WHOLE WEEKS. THEN THE NEXT DAY THE BLOCSS WATERPROOF ARM CAST COVER ARRIVED IN THE MAIL. THAT NIGHT I EASILY FOLLOWED THE INSTRUCTIONS ON HOW TO USE. SINCE I HAVE SHORT ARMS I WAS SKEPTICAL BUT IT FIT PERFECT AND I GOT IN THE SHOWER, TOOK MY HOT SHOWER WHICH FELT AWESOME AND GOT OUT, TOOK OFF THE ARM COVER AND MY WHOLE ARM AND HAND WERE DRY. THE BANDAGES AND SOFT CAST WERE COMPLETELY DRY. THIS IS THE HANDIEST ITEM SINCE SLICED BREAD!!!!NEEDLESS TO SAY, I HAVEN'T MISSED MY NIGHTLY SHOWERS AND NOT ONCE HAS THE BANDAGES AND SOFT CAST GOTTEN WET!!!! LOVE IT!!!!!!!!!!!!!!!!