Lens composition: 100% polycarbonate resinHeadband composition: 100% silicone rubberProduct description: This type of rubber ring(Lens ring/rubber pad)It is a dual-purpose rubber ring, which can be removed or installed; the rubber pad can be replaced for 5 yuan/pair.//img.alicdn.com/imgextra/i2/18140475/TB2eup7XX95V1Bjy0FfXXXvlFXa_!!18140475.jpg
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