Suitable for 6-14 years old children. The eyepieces have mirror adjustment so that they can be used even in outdoor swimming without any problems. Mirror-colored goggles provide protection against sunlight and glare, but it's also a design issue. Antifog is an antifog layer inside the eyepieces. This layer significantly reduces glare. Do not wipe your goggles with any handkerchiefs or touch them, damage the anti-fog layer, and the goggles will become foggy. UV-filter absorbs dangerous UVA and UVB radiation, which can damage your vision. The goggles with UV-filter are suitable for outside and inside swimming. The goggles have a wide angle of vision, providing you wide view and you can observe the surroundings. Ideal for swimmers on open water or triathlon. Swimming goggles have doubled straps in the middle. From the sides of the eyepieces there is one strap that is divided in the middle. The advantage of splitting tape is better handling and more comfortable tightening. The doubled straps ensure better hold of the goggles. The goggles have an exchangeable nose bridge. The nose bridge can be removed and replaced for longer or shorter ones. You can determine which length best suits you and adjust your swimming goggles according to your requirements and shape of your face. It is designed as unisex.