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  Product Details
Product Description
        
          
Part Numbers
          
          
Sizing & Fit
          
        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
 
 
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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.
Product Description
        Part Numbers
          Sizing & Fit
          
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