Your Shopping Bag is Empty
Have an account?
Log in to check out faster.
Your Shopping Cart
Loading...
12 Days of OR Limited-Edition Stickers! Explore The Lineup
Get your gifts on time! See Holiday Shipping Deadlines
Free shipping on orders $99+
Couldn't load pickup availability
The Helium Adrenaline Day Pack 20L features durable, lightweight Helium fabric to deliver a form-fitting day-pack for moving fast and light in the mountains.
Outdoor Research® gear is guaranteed to perform throughout the lifetime of the product.
Free shipping on orders $99+! Need it by the holidays? See our shipping page for all deadlines. Final sale items are not eligible for return or exchange. For more information, see our returns/exchanges page.
The Helium Adrenaline Day Pack 20L is perfect for adventure seekers who want to go light and fast. Built with Pertex® Shield, this pack is durable, waterproof, and breathable, making it perfect for carrying all your essentials on a long day hike or ultralight overnight trip. The main compartment is critically seam-taped to keep your gear dry and features a zippered internal pocket for storing small items. Compression straps with integrated ice axe loops keep your equipment secure, while a detachable waist strap provides extra support when you need it. When moving quickly is the top priority, the Helium Adrenaline Day Pack 20L hauls essentials and keeps them dry when the skies turn grey.
