A good scuba or snorkelling mask is one of your most personal pieces of kit that you will use on every dive that you make. When selecting a mask, you want to select one with tempered glass, a soft silicone seal and an adjustable strap. But, making sure it fits, is beyond doubt the most important factor when choosing a mask. One that fits your face well, is comfortable and gives you the best viewing area possible so you don’t want to miss anything underwater.