High quality gloves for swimming, snorkeling, scuba diving. I used them three times last month then decided to buy warmer gloves. These are wet suit scuba gloves that let in a thin layer of water just like a wet suit. Although they kept my hands much warmer, I need dry gloves for maximum warmth. I used these gloves only three times. You will feel their quality as soon as you put them on. My hands are medium sized but I was told to buy size Small to ensure a snug fit. I paid $60. A size medium hand has an 8-8.5 cm diameter of the hand at the knuckles. I can email you the Aqua Lung size chart.