TRIBORD WATER MASK KIDS/MEN´S/WOMAN´S ALL COLORS AND SIZES Designed for diving practitioner with bottle or snorkeling. TRIBORD Mask 100 is robust and comfortable , designed for use in snorkeling and scuba diving . No need to choose between price, quality and safety. EVERYTHING IS HERE The XS is suitable for children aged 4 to 6 The S for children aged 6 to 10 In general, The size M corresponds to the definition of slim faces: 90% of children over age 10, 90% of women, 50% of men. Size L covers wide faces: 50% of male faces and 10 % of female faces.