DSI Tyre 20 Inch X 2.125 Bear Claw Goggles • Lightweight Polymer Compound shell Rims • Lightweight Polymer Compound shell in three sizes• MaxiFlow impact foam air channels effective even at low speed• 360° Turbine Technology• Reduced peak brain acceleration by up to 30% at impact speeds associated with concussion• Reduces peak brain rotational acceleration by up to 40%• In molded impact foam for great energy absorption• Maximized ventilation with 20 vents• Visor with breakaway function for rotational impact force reduction• Dri Lex® moisture wicking 71001 LLB ABEC 5 Angular Contact Bearing (C3 Clearance) 12mm x 28mm x 8mm Angular Contact bearing generally used as a hub bearing for some quick release hub designs and can be used as a pivot bearing though the MAX type version of this bearing is better suited for suspension use