Suitable for children up to 6 years old Colour tinted lenses are suitable for indoor and outdoor swimming making them perfect for swimming lessons and holidays Air filled silicone gasket provides an ultra-light comfortable fit for less marking around the eyes, the split yoke silicone strap ensures a secure fit and reduces pressure around the eyes Slide adjust clip is simple and secure, simply feed and pull to tighten to find the perfect fit All Zoggs swimming goggles feature UV protection and anti-fog for a safer, clearer swim and longevity