Manufacturer's Description

Visit Sierra Designs's Men's Isotope Pant page.

Retailers' Descriptions

Here's what other sites are saying:

The Isotope Pant defies logic with its lightweight, fully waterproof-breathable protection.

- refers to the men's version

Sierra Designs Isotope Nano Pants are the perfect back-up plan if the weather turns southlightweight, waterproof and compact, these pants also feature a micro-ripstop pattern for durability.

- refers to the men's version

The Sierra Designs Isotope Nano pants are all the backup you need in your pack for when the weather turns ugly. Waterproof but compact, they'll keep you covered. Ripstop polyester shell fabric features a Nanolite waterproof breathable laminate for complete protection from the elements. Fully taped seams create the ultimate seal against water and snow. Articulated knees encourage freedom of movement. Ankle zippers with stormflaps make the Sierra Designs Isotope Nano pants easy to pull on and off while wearing boots. Closeout.

- REI refers to the men's version

When the weather take a turn for the worst, bust out the ultralight Sierra Designs Men's Isotope Nano Pant to shield you from the unexpected elements. Made from fully waterproof breathable 2L Nanolite fabric, this packable rain pant protects you without weighing down your pack.

- refers to the men's version


Weight 8.5 oz
Inseam Length 32.5 in (Medium)
Waterproof 10,000 mm
Breathability 10,000 grams per sq m
Shell Fabric Nanolight

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