Sick of having ring marks on your eyes? The ultra-soft structure, wide field of vision and excellent support of the SPIRIT goggles mean you can swim in comfort without any disruptions to your vision. • REDUCE FOG IN YOUR SWIMMING GOGGLES: Fog develops due to several factors: a difference in temperature between the body and the water, humidity levels, etc. Wear due to friction is one of the main causes. If your goggles fog up, dip your lenses in the water and a protective film will reform. After a certain amount of time, it is normal for the performance of the anti-fog coating to be diminished. We provide an anti-fog marker that reactivates an ageing anti-fog treatment and which makes your goggles last longer. • CHOOSING THE SIZE OF YOUR SWIMMING GOGGLES: The watertightness of the swimming goggles is dependent on the proper fit of the skirts with the shape of your face. Before purchase, we advise you to do the "suction" test with your goggles without the elastic strap: If the goggles stay on your face by themselves, with slight suction, the product will be watertight during your swim. This also enables you to spot any areas of discomfort or annoyance when the model is on your face. This model is available in sizes S & L (narrow & rounder faces). • ADJUSTING YOUR SWIMMING GOGGLES: These swimming goggles fit the morphology of your face without needing to be over-tightened. Goggles that are too tight can cause discomfort, leave marks and even create water inlet holes. It is not necessary to press against the lenses with your hands, a light suction effect is usually enough for swimming sessions without water inlet holes. The straps should ideally sit 2 to 3 cm above your ears. This position will optimise the grip and comfort of the goggles.