Soft, comfortable frame (PP) Silicone head strap adjusts easily for fit Impact-resistant polycarbonate lenses for safety Latex-free, no skin irritation, hypoallergenic Adjustable head strap for a leak-free fit Splash and swim in comfortable Koi Swim Goggles! Our colorful goggle features a flexible frame that contours easily to your face. The adjustable silicone head strap offers a leak-free fit. These latex-free goggles are also safe and durable with impact-resistant polycarbonate lenses.