The groin, thighs and buttocks are some of the toughest places to dress and retain a dressing. This is due to a combination of factors such as perspiration & moisture, body hair, curves, creases, sensitive skin, movement and, of course friction.
With all of this in play, it is little wonder that dressings quickly unravel, leak, fall off, restrict movement, pinch the skin, and cannot be easily adjusted if repositioning is needed, and to make it worse they cause pain or skin damage during when you try to take them off.