Native Eyewear - Mammoth 2x Simms ExStream Core Bottom features

Simms ExStream Core Bottom features a two-layer weave to trap the heat close to your body

noncorrosive lacing system for support and durability

The attention to detail extends to the aesthetics as well

Fully machined canvas phenolic rod

Native Eyewear - Mammoth 2x Simms ExStream Core Bottom featuresIn or out of bounds, Mammoth terrain is no joke, and neither is our new ultra functional frame with vented hooding and side shields for extra protection. While the retro mountaineer styling brings you back to the early days of exploration, the modernized details and features of this frame will help you get to those far off zones you have always dreamt of.