about this product: Adjustable - Adjustable elastic band will fit any head size and accommodate any helmet. Safety - The scope has excellent flexibility, can be discretionary kneaded, not easily deformed or broken, which can avoid hurting the eyes when the lens hit by external force. High quality PC lenses. High quality rubber frame. Windproof, sandproof, dustproof. Shockproof, anti-abrasion, against scratches. Product Description: Product Description ??Adjustable head strap. ??Comfortable fit with sponge protection. ??Fog resistant and offers dust protection. ??Features?: shatterproof and scratch resistant lens.??The mask has sponge padding, to make you comfortable when you wear it. It is adjustable, it is perfect for people and the special design resists fog, sand, dirt and other moisture problems. Specification: Materials: ??Lens Material: PC Reinforcement ??Frame material: ABS plastic ??The stuffing material: foreskin sponge ??Elastic band: high density cotton ??Material: 100% cotton, high elastic ??Specialty: adjustable non-slip (or common high elastic strap; can be adapted to all sizes of head wear) ??Use human body design optics, have good ventilation, widely vision, and not disturb strong winds, snow grains, mirage and all kinds of strong light. Features: ??Weight: 71g ??Lens color: Multi-color ??Target target: adult male or female ??Bezel Size: 176mm(W)*78mm(H) Package contains: ??1 x Goggles Mask