MSR's tiny, weather-resistant E-Bivy overbag provides ideal protection when the weather turns bad, without taking up space in your bag. It protects against wind, dew, spray and even light rain, and keeps you comfortably warm under a tarpaulin, when bivouacing or winter camping. You can easily slip it into a pocket of your backpack, so you can have it with you in case you unexpectedly have to spend a night under the stars.

Breathable:  the breathability of the fabric minimizes internal condensation.
Protection:  Silnylon top and durable bottom treated with DuraShield™ waterproof coating ensure weather resistance.
Compact and lightweight: weighs only 240 g (9 ounces). and takes up no space when folded.

Features of the MSR E-Bivy over-bag:

• Minimum weight: 230 g
• Maximum weight: 250 g
• Folded dimensions: 18 x 10 cm
• Material: 30D ripstop nylon 10,000mm Durashield™ polyurethane & DWR