Brand: HJC Helmets Manufacturer's Part Number: 1502-634 Part Type: Helmets Product Line: HJC i10 Helmets Summit Racing Part Number: HJC-1502-634 UPC: 190501128560 Helmet Type: Full Helmet Size: Large Snell-Approved: Yes FIA-Approved: No DOT-Approved: No ECE-Approved: No SFI-Approved: No Snell Rating: Snell M2020 Helmet Base Color: Black Helmet Finish: Matte Fresh Air Compatible: No Helmet Primary Color: Black Helmet Graphic Style: None Helmet Shield Included: Yes Vented: Yes Removable Lining: Yes Circumference: 23.625 in. - 24.000 in. Hat Size: 7 1/2 - 7 5/8 Helmet Shield Color: Clear Visor: No Helmet Liner Material: SuperCool Quantity: Sold individually. HJC i10 Helmets HJC i10 helmets feature a polycarbonate shell lower costs without skimping on protection. An improved ventilation system from "new" intakes and exhausts increases airflow， while maintenance is made easy with simple， snap-on top vents. The chin guard intake and side Venturi exhaust vents flow air along the face shield to mitigate fogging. Bluetooth compatible with Smart HJC (Bluetooth system sold separately)， the i10 is offered in a range of sizes and in a variety of solid-color finishes.Additional HJC i10 helmet features: * Advanced lightweight polycarbonate composite shell * Aerodynamic shell shape―using advanced CAD technology―reduces turbulence* Impact-absorbing， multi-density EPS liner* SuperCool moisture-wicking interior materials* Eyewear grooves to accommodate most styles of eyeglass frames* Advanced Channeling Ventilation System (ACS)* Full front-to-back air channels to evacuate heat and humidity* Crown and cheek pads are removable and washable* Accepts all CL-17 cheek pads， which are interchangeable throughout shell sizes* HJ-31 Pinlock-prepared face shield (insert lens sold separately)* Optically correct， 3-D face shield offers 95 percent UV protection* RapidFire shield replacement system allows for quick， secure， and tool-less shield removal and installation* D-ring chin strap closure* Bluetooth-ready design accepts SmartHJC 10B or 20B Bluetooth communicators* DOT and SNELL M2020 (size 3X-Large is DOT only)