PERFECT FIT: The swimming goggle strap is adjustable and the quick-release fastener makes it easy for adults to put on and take off the goggles. Tighten or loosen the strap to adjust it to your head size. Women's swimming goggles can be easily adjusted in size with the strap ratchet. ANTI-FOG: The anti-fog lenses of the swimming goggles are coated with a strong hydrophilic anti-fog coating to give you a clear view, clear and transparent. You will have a clear and wide field of vision without seeing double images underwater. NO LEAK: The seal is made of soft silicone with 3D Smart Fit technology for an extremely comfortable fit and is leak-proof. Thanks to the elastic technology that reduces pressure around the eyes and head, these swimming goggles protect your eyes completely and keep them dry. LARGE FIELD OF VIEW DESIGN: The lenses of the swimming goggles are equipped with a large field of view mirror for an unobstructed view of the underwater world and also reflect harmful UV rays to protect your eyes from heat and sunlight. COMFORTABLE DESIGN: Wide and flexible silicone edges prevent the swimming goggles from leaking. The removable nose bridge and 3D frame adapt to the unique contours of your face. The swimming goggles offer you an optimal wearing experience. Fit: The swimming goggles adapt to the contours of your face to ensure a comfortable fit without compromising quality and functionality. Clear vision: The transparent lenses of the swimming goggles offer unparalleled underwater vision and ensure a clear swimming experience. Material: The swimming goggles are made of high-quality, durable materials that ensure a long service life and consistent performance. Waterproof: The swimming goggles ensure that no water gets into your eyes while swimming and your vision remains clear. Easy to use: The swimming goggles have a simple but effective design that allows you to put them on and take them off easily without much effort.