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What’s New in Version 4.0


MAX O2 System side compression for a better fit and cooling. Expandable mesh in main compartment for added capacity. New harness pockets for intuitive gear placement. Updated UltrAcool Light Mesh adds durability and breathability.


The Astral 4.0 is the newest iteration of our female specific vest which features our patented HerFit Harness. The HerFit Harness is a securing strap system designed specifically to fit women. The straps allow for chest, heart, and lungs to be free with no restriction to the open air. This pack’s minimized contact ensures that you will not chafe. The Astral 4.0 has been upgraded with our UltrAcool LightMesh which provides a very breathable and lightweight feel and increases pack durability. It has been lined with a soft perimeter binding to ensure any contact with the body is comfortable over the long haul. A new shoulder pocket capable of carrying any size cell phone has been added. A sweat-proof pocket has also been added for those items you want to keep dry. For an even better fit, the Astral 4.0 features a MAXO2 System side compression adjustment which helps stabilize the pack empty or fully loaded and provides a more fitted feel with less heat retention. The main compartment of this vest now features an expandable mesh which has increased the capacity to 9 litres for the endeavors that require more gear and can be secured down with string compression keeping the pack stable.


Weight: 13.6 oz (386 g) with reservoir, 8.8 oz (249 G) without reservoir


Hydration: 2 Litre Reservoir (not included)


Total Volume: 427 c.i (9 L)


Technologies: HerFit Harness™, On-The-Go Pockets™, Distributed Weight™, UltrAcool System™,Max02 System™, Durable and Light Weight Fabrics™

UltrAspire Astral 4.0 Hydration Vest

C$167.99 Regular Price
C$125.99Sale Price
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