Extendable handles, compatible with NVG
  
Handles can be replaced with rubbers
  
Interchangeable lenses, no tools needed to change (5 different shades)
  
Three glasses in the set
  
Compatible with optical glasses insert (product code PTX)
  
Adjustable nose support
  
The glasses block 100% of harmful UVA and UVB rays
  
Unbreakable Selenite™ Polycarbonate glasses meet the highest standards
  
Compliance with standards: MIL-PRF-32432(GL), ANSI Z87.1-2010, EN 166 FT, US Federal OSHA 1910.133(b)(1)(i)