Prism 40 Pack Size:LG As Smartwool's thickest and warmest

As Smartwool's thickest and warmest offering

Designed to pair perfectly with low-cut hiking shoes

and comfort that will last on multi-day

Nylon sheave and aluminum side plates for excellent strength to weight ratio

Prism 40 Pack Size:LG As Smartwool's thickest and warmestThe alpinists answer to fast and light efficiency. The Prism 40 Pack is an alpine specialist, stripped down to the absolute essentials for moving quickly over technical terrain. Designed with direct input from professional alpinists, it combines the bombproof durability of woven Dyneema with a streamlined feature set that refuses to snag on chimneys or haul loops. Whether you are tackling a single day winter ascent or a multi day alpine traverse, this