LEATT Helmet MTB Trail 2.0 V22 Color:Dune 65 lbs)• Plastic Free Recyclable Color:Malbec 65 lbs)• Plastic Free Recyclable Packaging• Sizing #S (51 55cm –20 21 5 8") #M (55 59cm –21 5 8 23 1 4") #L (59 63cm –23 1 4 24 3 4") As one of the lighter and more minimalistic bicycle gloves in our product line This helmet is well ventilated with maxiflow air channels and the Dri Lex® liner is washable • 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