The fins are fully silicone soft and comfortable with short fins snorkeling equipped with lightweight flippers

About materials:

      This product USES the United States dow corning import solid silica gel production, 2 period of different hardness of silica gel (general of this style is to use the same hardness of silica gel, so, if it weren't for the front too soft, swim, behind is too hard, wearing uncomfortable), the front poof surface water in order to more improve resistance strength, with 60 degrees of silica gel, is hard, so to water resistance, promote the faster. The back part of the foot cover is made of 45 degree silicone, which is soft and comfortable, and will not grind the foot.