ノイズキャンセリング ヘルメットに取り付け可能なイヤーマフ 遮断音の低減

Material: memory metal material, with double silk structure, elasticity is not out of shape, hang helmet design can be rotated and adjusted, the design is fashionable and ergonomic support, can be adjusted and the clasp can be rotated.
Double-layer structure: Double-layer design gives you double protection, making this very versatile for most construction sites and noise reduction environments.