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

you can focus on the catch

with extra room for a few more items

Lining and strap/hip-belt fabrics are certified as bluesign® approved

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.