Nemo Equipment Vortex Pump Sack

Using a pump sack prevents moisture from your breath from accumulating inside your sleeping pad. Over time, this moisture can degrade the internal insulation and potentially lead to mold growth, so using a pump sack helps extend the lifespan of your gear.

The Vortex is specifically designed to work with Nemo's Laylow multivalve systems. While it may not create a secure seal with other brands' valves, it is optimized for seamless integration with compatible Nemo pads.

Because the Vortex features a high-capacity chamber, you can typically inflate a standard sleeping pad in just a few cycles. The exact number depends on the volume of your specific pad, but it is significantly faster and less exhausting than manual inflation.

Not at all. The stay-open collar is designed to facilitate easy air intake while you are inflating the pad, but it does not interfere with the sack's ability to compress. The material is lightweight and flexible, allowing it to pack down very small when not in use.

While the material is durable, the Vortex is engineered specifically for inflation and does not feature the waterproof sealing or seam-taping required for a reliable dry bag. It is best used as a dedicated inflation tool to keep your sleep system organized.