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CS40 Ultra Backpack

CS40 Ultra Backpack

$329.97
$329.97 $329.97
Torso Size - Small
Hip Belt Size - XS Belt
 
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2 Ounces. The difference between being comfortable and not.

We’ve known experienced thru-hikers that avoid some amazing remote backcountry because “the weight required for the long carries would be too uncomfortable with their frameless packs.”

So we asked ourselves, "What if we could design a frame that weighs as much as a sip of water, but could still carry all the necessary gear and weight comfortably, no matter the distance or season?"

That’s exactly what the CS40 Ultra is - the ideal 40L ultralight pack for the ultralight hiker!

It’s comfortable, durable, & stable - even if you are hiking a lot of miles all day!

And this thing is LIGHT.

There are a lot of ultralight backpacks out there that are so minimal that they aren’t even comfortable. But the CS40 Ultra was designed for extra comfort even while maintaining an ultralight weight. 

  • Comfort Redefined: Unlike other ultralight backpacks that sacrifice comfort, the CS40 Ultra prioritizes your comfort without compromising on weight. Our thoughtful design includes a full frame, functional load lifters, targeted back panel, anatomical shoulder straps, and a wide hip belt for a comfortable fit during extended hikes.
  • Ultralight Innovation: We didn't cut corners; instead, we cut weight. The secret lies in the name – CS stands for Carbon Stay. We utilized ultralight Carbon Fiber frame stays, weighing only 2 oz (combined total), to efficiently distribute your load. Functional load lifters ensure weight stays off your shoulders, making every step more comfortable. And then there's the fabric...
  • Ultra-Durable Fabric: Our Ultra fabric is as light as DCF but 6 times more abrasion-resistant and twice as strong. It ensures a tough yet lightweight pack for your adventurous pursuits. When the trail gets wild, your CS40 Ultra is up to the challenge.
  • Streamlined Design: Embrace simplicity with a minimalistic yet feature-rich design. We kept the essential features you need while eliminating unnecessary bulk. Functional load lifters, stretch mesh pockets, and ample space in the main chamber make this backpack a reliable companion.

Lightweight, durable, & streamlined  – the CS40 Ultra is the ultralight solution for hiking without sacrificing comfort. We kept all the best features you need, and got rid of the ones you don’t! 

This product is sold by Haven Tents, in partnership with Outdoor Vitals. All Outdoor Vitals products purchased on haventents.com are shipped by Outdoor Vitals.

M Torso with M Hip Belt: 27 oz.

See below for more specs and features.

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This item is shipped by Outdoor Vitals and is subject to their shipping and return policy. For specific information on processing and shipping times, please refer to their shipping policy.

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Features:

  • Full size, fully padded load bearing hip belt
    • Targeted cutouts in hip belt foam for breathability and weight reduction
  • Hip belt pockets with lanyard clip inside
  • Targeted back panel foam puts cushion where it’s most needed, and leaves voids where it’s not
    • Targeted cutouts for weight reduction and air movement / breathability (all for comfort)
  • Breathable shoulder straps with targeted cutouts and breathable ripstop mesh
  • Adjustable and replaceable sternum strap
  • Functional load lifter straps
  • 2 carbon fiber internal frame stays
  • Trekking pole / ice ax retention loops
  • 4 lashing loops on bottom panel of pack
  • Volumized stretch mesh pocket
  • Roll top closure allows additional volume
  • Top compression strap
  • 3 point side compression cords
  • Self compressing bottom curve to keep your load higher & closer to your back
  • Internal hydration bladder sleeve and hydration tube port
  • Generously sized water bottle pockets - fit 2 bottles (smart water bottle size)
  • Colored white for reduction in heat on contents
Backpack features listed on a black background with images at the bottom.
Self-compressing backpack design with highlighted features and benefits.
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Technology:

  • Volume: 51L Small Torso Size (39L main, side pockets 2L each, stretch pocket 6L, hip belt pockets 1L each)
    53L Medium & Large Torso Size (41L main, side pockets 2L each, stretch pocket 6L, hip belt pockets 1L each)
  • Main Pack Fabric: Challenge UltraWeave™ 200, - UHMWPE / high-tenacity polyester woven blend, laminated with Challenge RUV™ film
  • Hip Belt Fabric: 100D Robic™ nylon diamond ripstop
  • Pack Dimensions: S Torso - 21.5" height (plus 10.5" roll top) x 10.75"width x 6.75" depth
    M/L Torso - 24" height (plus 10.5" roll top) x 10.75" width x 6.75" depth
    (scroll down for hip belt dimensions)
  • Internal Frame: 2 carbon fiber stays
  • Zippers: YKK
  • Hardware: Duraflex plastic hardware
  • Fits up to: 40" Pant Waist
  • Max Recommended Carry Weight: 35 lbs
  • Hydration Compatible: This pack can be used with most water bladders if desired
  • Warranty: Outdoor Vitals Performance Promise
Backpack features with volume and weight details highlighted.
Dimensions of three backpack sizes: Small, Medium, and Small & Medium.

Pack Dimensions:

  • S Torso - 21.5" height (plus 10.5" roll top) x 10.75"width x 6.75" depth
  • M/L Torso - 24" height (plus 10.5" roll top) x 10.75" width x 6.75" depth

Hip Belt Dimensions (not including webbing):

  • XS - 25.5" length, pockets 4.75" x 2"
  • S - 27.25” length, pockets 5.5" x 2”
  • M - 30” length, pockets 6.5" x 2”
  • L - 34” length, pockets 6.5" x 2”
  • XL - 36.25” length, pockets 6.5" x 2”

Videos and Education

Features

CS40 Ultra on the Uinta Highline Trail

Designing the CS40 Ultra Backpack

How to Properly Adjust & Fit the CS40 Ultra