OUR BEST JUST GOT BETTER. For everyday swimming, look no further. Our critically-acclaimed Futura Biofuse Flexiseal Junior range offers the ultimate in Speedo goggle comfort. Designed using super-soft, flexible materials and featuring our best-selling Speedo BiofuseÂ® technology, Biofuse goggles are so comfortable you could even forget you’re wearing them. Suitable for juniors aged 6-14.