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509 V.E.E.S Protection System For Altitude 2.0 Helmet

The 509 VEES Protection System for Altitude 2.0 Helmets easily snaps into place and adds extra warmth and wind protection to your helmet.

Product Style RevZilla Item # Store Sku MFR. Product # Availability
Product Style Black / 4XL RevZilla Item #10327043 Store Sku MFR. Product #F01018200-180-001 AvailabilityAvailable: Ships in 3-5 business days
Product Style Black / 3XL RevZilla Item #10327044 Store Sku MFR. Product #F01018200-170-001 AvailabilityAvailable: Ships in 3-5 business days
Product Style Black / 2XL RevZilla Item #10327045 Store Sku MFR. Product #F01018200-160-001 AvailabilityOut of Stock
Product Style Black / XL RevZilla Item #10327046 Store Sku MFR. Product #F01018200-150-001 AvailabilityOut of Stock
Product Style Black / LG RevZilla Item #10327047 Store Sku MFR. Product #F01018200-140-001 AvailabilityAvailable: Ships in 3-5 business days
Product Style Black / MD RevZilla Item #10327048 Store Sku MFR. Product #F01018200-130-001 AvailabilityAvailable: Ships in 3-5 business days
Product Style Black / SM RevZilla Item #10327049 Store Sku MFR. Product #F01018200-120-001 AvailabilityAvailable: Ships in 3-5 business days
Product Style Black / XS RevZilla Item #10327050 Store Sku MFR. Product #F01018200-110-001 AvailabilityAvailable: Ships in 3-5 business days

509 Helmet Sizing

Size Head (cm)
XS 53-54
SM 55-56
MD 57-58
LG 59-60
XL 61-62
2XL 63-64
3XL 64-65
4XL 66-67

Sizing information is provided by the manufacturer and does not guarantee a perfect fit.


How to Measure

  • H Head
    Wrap a cloth measuring tape around your head just above your eyebrows and ears. Pull the tape comfortably snug, read the length, repeat for good measure and use the largest measurement.
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