The Killa Hydro is a low-profile pair of swimming goggles that are lightweight and provide an optimal fit. They're the best choice for swimmers looking for small, comfortable swimming goggles.  Features: OPTIMAL FIT-The ergonomic, three-dimensional gasket fits to your face and reduces pressure around the eyes to improve water tightness.  COMFORT-The adjustable clip-on straps are very lightweight and comfortable, making them ideal for intensive pool training.  ANTI-FOG-The unique, long-lasting anti-fog coating prevents fogging and allows for clear vision at all times.