1.Fog-resistant tempered glass: This children's swim mask is made of tempered glass, which has good impact resistance and anti-shatter properties, making it more durable and safe. The tempered glass is also treated with a fog-resistant coating, providing a 180 clear view and allowing children to have a more fun swimming experience. Caution: Do not jump into the water while wearing this nose-covering swim mask to avoid impact injuries.2.Comfortable and eco-friendly material: The skirt and nose-cover of the children's diving mask are made of food-grade silicone, which is safe, odorless, fits the face well, and does not cause pressure on the face. It has strong sealing and is comfortable to wear without leaking water, making it the best choice for children and teenagers to dive.3.Simple and adjustable buckle: Our swim mask features adjustable side buckles that can easily adjust the mask to avoid water leakage. The elastic silicone strap is suitable for children's faces aged 4-16, making it more comfortable to wear.4.Soft nose pocket design: The swimming goggles are equipped with a soft silicone nose pocket, which is particularly suitable for children who are just learning to swim, as they don't have to worry about choking on water while swimming, snorkeling or diving.5.Unique design: This diving mask has a very unique design, featuring a fluorescent dot on the front that makes it perfect for use in low light or dark environments. Children will feel cooler because of the fluorescent dot design, making them stand out among their peers and enjoy swimming more. Although this fluorescent dot is only for decoration and does not have lighting function, it can add highlights to children's diving masks. This is the best gift to bring endless joy to children.