Speedo's MDR 2.4 Junior Swim Goggle are designed for smaller narrower faces has outer eye socket fit with elastomeric technology that reduces goggle pressure around the eyes helping to minimize goggle ring marks. Expand your comfort with the outer eye fit. This gasket shape offers the most universal fit outside your eye socket with the security and reliability of Speedo's other goggles. Clear-Sight Technology prevents eye fatigue, offering extended-peripheral vision with no lens distortion. MDR 2.4 Junior Goggle has a dual density thermoplastic rubber (TPR) frame which is strong, resilient and improves fit comfortably accommodating a wide range of faces. The polycarbonate lenses come with anti-fog and UV protection. Speed Fit Clips provide easy strap adjustment. The liquid silicone strap is the highest grade and the purest form of silicone. Mask is 100% Latex-free. Polarized lenses eliminate glare, enhance clarity, and improve depth perception for better vision than tradtional lenses.