With this function junior swimmer can adjust their strap easily even wearing swimming goggles and grip point prevents slipping.
Difference of view from inside and outside of the lens In the case of an orange-tinted mirror, red and yellow light is reflected and the mirror looks orange on the outside, while it looks blue on the inside because blue light passes through.
Reflects yellow light.
Reflects red light.
L i g h t
Blue light passes through. Orange mirror