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    "generated_at": "2026-11-10T23:12:45+00:00",
    "post_type": "helmet",
    "metadata": {
        "id": 38681,
        "title": "Nolan N21 Visor Racer Blue",
        "slug": "nolan-n21-visor-racer-blue-2",
        "url": "https://helmetsan.com/zh/helmets/nolan-n21-visor-racer-blue-2/",
        "language": "zh",
        "brand": "",
        "category": "Open Face",
        "featured_image": "",
        "excerpt": "配备集成遮阳镜的城市开面盔，支持 N-Com 通讯系统。 The Nolan N21 Visor Racer Blue is engineered as a high-integrity Full Face protective system by Nolan, utilizing a structural shell constructed from Polycarbonate. This structural layup is engineered to provide progressive kinetic energy dissipation during impact deceleration, distributing localized shock across outer lamina layers while minimizing deformation transfer into the internal ... 阅读更多",
        "modified": "2026-09-08T22:59:37+05:30"
    },
    "identifiers": {
        "sku": "NOL-N21V-RAC",
        "ean13": "8052691400123",
        "mpn": "N21-001-RACER-BLU",
        "asin_us": "B07QKZJ8V3",
        "asin_status": "verified",
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                "asin": "B07QKZJ8V3",
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    "specifications": {
        "brand": "N/A",
        "helmet_family": "N21 Visor",
        "material": "N/A",
        "weight_g": 1100,
        "weight_lbs": "2.43",
        "homologation_standard": "N/A",
        "sharp_rating": "",
        "rotational_tech": "N/A",
        "strap_type": "Double D-Ring",
        "noise_db_at_100kph": 0,
        "comms_ready": "Generic Speaker Cutouts",
        "head_shape": "Intermediate Oval"
    },
    "variants": [],
    "compatible_motorcycles": [],
    "pricing": {
        "visitor_country": "US",
        "currency": "USD",
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