Ultralight Pump Bag

LIGHT & EFFICIENT INFLATION

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Inflate the smart way and improve your sleeping mat’s performance with Alton’s Ultralight Pump Bag. Made from tough ripstop nylon that’s waterproof and puncture resistant, it also functions as a dry bag or pack liner.

  • Ships in 24 hrs

  • Easy returns

  • Lifetime Warranty*

Frequently bought together

Explore Product Features

Easy & Effective 

Easy & Effective 

This Ultralight Pump Bag makes it easier than ever to inflate your sleeping mat – no huffing and puffing required.

Improved Pressure Retention

Improved Pressure Retention

By using cool, dry air to inflate, this pump sack helps keep your sleeping mat firm and supportive by reducing air compression.

Multi-Purpose Design

Multi-Purpose Design

With 40L capacity and a non-wicking roll-top closure with a Hypalon™ strip and snap-buckle, the Ultralight Pump Bag can function as a dry bag or pack liner.

Tough Construction

Tough Construction

Made from ripstop nylon and fully seam-sealed throughout, this Ultralight Pump Sack is waterproof, puncture-resistant and comes with a Lifetime Warranty.*

Specifications

Pump Bag Dimensions 35 × 21 × 55cm
Pump Valve Diameter 22mm
Material Ripstop Nylon
Pump Bag Volume 40L
Total Packed Weight 88g

What's included

1 x Ultralight Pump Bag

ALL ALTON PRODUCTS ARE COVERED BY A LIFETIME WARRANTY.* CLICK HERE TO LEARN MORE.

ALL ALTON PRODUCTS ARE COVERED BY A LIFETIME WARRANTY.* CLICK HERE TO LEARN MORE.

ALL ALTON PRODUCTS ARE COVERED BY A LIFETIME WARRANTY.* CLICK HERE TO LEARN MORE.

ALL ALTON PRODUCTS ARE COVERED BY A LIFETIME WARRANTY.* CLICK HERE TO LEARN MORE.

Save your breath – and your sleeping mat.

If you’re using your breath to inflate your sleeping mat, you may unknowingly be reducing its performance – and it’s air pressure. This is because as the warm air cools down inside the mat, it compresses, making your sleeping mat feel like it’s losing air – even though it isn’t. The Ultralight Pump Bag reduces this effect, helping your sleeping mat stay firm and supportive all night long. 

Increased insulation efficiency in cold conditions

In cold conditions, inflating your sleeping mat with your breath can cause internal moisture to build up inside the mat, where it reduces insulation efficiency and may lead to mold growth over time. Using a pump sack, such as Alton’s Ultralight Pump Bag, minimises internal moisture and keeps your sleeping mat performing at its best.

Compatible with all Alton Sleeping Mats

The Ultralight Pump Bag features a 22mm connector valve that is compatible with all Alton Sleeping Mats. To use, simply clip the connector into your mat’s inflation valve and open the pump sack to ‘scoop’ up some air, then close and roll down to push the air into the mat. Repeat this 2-4 times until your sleeping mat is inflated to your liking. Yep, it’s that easy!

Multi-purpose functionality at its finest

Made with high quality materials, our Ultralight Pump Bag is designed to be lightweight, durable and functional – or rather, multi-functional. When you’re not using it to inflate your sleeping mat, it can act as a waterproof dry sack or pack liner to store gear, or even as an ultralight camping pillow. And with a Lifetime Warranty* included, you know it’s built to last.

FAQ's

  • A sleeping mat pump sack, also called a pump bag or dry sack pump, makes inflating your sleeping mat faster, easier and more efficient. 

    Using cool, dry air to inflate your sleeping mat helps to maintain firmness overnight, reduces air compression and pressure loss in cold conditions, and reduces moisture buildup inside the mat. 

    For more information on why we recommend using pump sacks, refer to our sleeping mat care guide.

  • Inflating a sleeping mat with a pump sack typically takes 1 to 2 minutes, or around 2 to 4 sackfuls of air, depending on the size of your sleeping mat.

  • Our Ultralight Pump Bag features a 22mm connector that pairs with the standard wide-mouth valve design we use across all Alton sleeping mats. 

    While it may fit mats from other manufacturers that utilise the same valve size, we haven’t tested compatibility for this and can’t guarantee a perfect fit. 

  • Yes, our Ultralight Pump Sack is fully seam-sealed and features a non-wicking roll-top closure with a Hypalon™ strip and snap buckle, just like a true dry bag. With a generous 40L capacity, it works well as a waterproof pack liner or large dry sack for important items like your sleeping bag and sleeping mat.