b'S-M 55-59 cm / 21.7 - 23.2L 59-62 cm / 23.2 - 24.4S-M g: 400 / oz: 14.1L g: 470 / oz: 16.6CERTIFICATION: CPSC 12.03 . NTA 8776NTA 8776 CERTIFICATIONS STANDARDS: Protects against impact at higher speeds, ideal for e-bike riders.Terraform NEW16 VENTS ERGO DIVIDERFASTEX SYSTEM RSR 12 S BUGSTOPADAPTIVE TOTALMX GOGGLEEXTENDEDFLOW THROUGHSIDE BUCKLES CLOSURE BUCKLE ADJUSTABLEPADDING WITHAIRFRAME BAND COMFORT FIT COMPATIBLE TEMPORAL AND VENTILATION RETENTIONPROTECTIVENECK PROTECTIONSYSTEM NETHELMET COLORSINCLUDED: Visor adjustable Free pads interchangeable Bug stop interchangeable RSR 12 Retention SystemBLACK MATTE GREEN SAGE MATTEHL 83 00 11 | 252S - M HL 83 00 21 | 252S - MHL 83 00 12 | 252L HL 83 00 22 | 252LTerraform helmet integrates TwicemeTechnology, offering enhanced safety benefits: Instant Medical ID Access: Quickly provides first responders with your medical information. Rescue Alert: Notifies emergency services swiftly in case of an accident. Friends Alert: Automatically alerts your selected contacts when necessary. Immobility Detection: Triggers an alert if prolonged inactivity or immobilization is detected.RECYCLED MATERIAL With Twiceme, ride confidently knowing help is just moments away.SPARE PARTSVISOR RSR 12 S RETENTION SYSTEM BUG STOPBlack Black BlackAC 40 00 77 | 25S/M C0 00 04 94 | 15 C0 00 04 96 | 20AC 40 00 78 | 25L82'