Prism 40
SKU: 3-10740-1
DESIGNED FOR: Alpine Climbing
GOOD FOR: Ice Climbing, Mixed Climbing, Mountaineering
WEIGHT: 34.6oz / 982g (Medium)
PRIMARY FEATURE SUMMARY
With external diamond pocket to lock two technical axes in place, an external crampon pocket, and a drawstring closure with floating lid, this pack is ideal for ice climbing, mixed climbing, and mountaineering. Primary features include:
- Ice axe loop for a traditional mountaineering axe
- Top-loading pack with lid featuring a zipper pocket
- Over the top strap helps compress and secure a rope
- Removable hip belt with gear loops and ice clipper slots
- Low-profile side pockets for securing pickets/wands

WHY CHOOSE THE PRISM 40?
WHY CHOOSE THE PRISM 40?
REMOVABLE FLOATING LID
Sized to accomodate items you need quick access to throughout the day
DRAWSTRING CLOSURE & WATERPROOF MATERIALS
Easy to open and close with gloves on for loading or unloading gear. Pair with our Stuff Sacks for a buttoned up, nearly waterproof kit
HIGHLY ADJUSTABLE
Compression straps secure crucial equipment while keeping the pack close to the body for free and unrestricted movement
FEATURES
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SPECS & DIMENSIONS
- MaterialsDCH150 + DCHW
- Internal Volume40L
- Weight34.6oz | 982g
- Load CapacityUp to 50lbs
- Back Width11.0" | 27.9cm
- Height (Fully Unrolled)35.0" | 88.9cm
- Top Circumference38.0" | 96.5cm
- Bottom Circumference28.0" | 71.1cm
- Made InMexico
WHY CHOOSE THE PRISM 40?
REMOVABLE FLOATING LID
Sized to accomodate items you need quick access to throughout the day
DRAWSTRING CLOSURE & WATERPROOF MATERIALS
Easy to open and close with gloves on for loading or unloading gear. Pair with our Stuff Sacks for a buttoned up, nearly waterproof kit
HIGHLY ADJUSTABLE
Compression straps secure crucial equipment while keeping the pack close to the body for free and unrestricted movement
Features
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Product Reviews and Questions
Almost perfect ice climbing pack
I liked everything about this pack (compared to other “ice climbing pack designs”. Only wish it had a larger top pocket to accommodate extra mitts, first aid kit, beacon.
Best light weight simplistic minimalist pack out there
Great pack, really ticks all the boxes. Light weight, simplistic, minimalistic, super durable, VERY comfortable. great features. I measured my torso and went with a Medium. Should have got a size small unfortunately. But I will just have to get by
Hyperlite Mountain Gear
Hey Josh, thanks for the review! Reach out to the Customer Service team to get the fit of your pack assessed. They should be able to help you out with this!
Changing the game
Amazing and great pack! Light and extremely durable!
Guide
Hi, I am an Ifmga guide living and working in patagonia, chalten for 20 years. I guide all the most challenging climbs in the are as fitz Roy. This is my first year with your pack an i really like it.
My suggestion is related to the hip belt. I know it's removable but will be nice if it camps with a thin strap belt to climb with. Thanks
Great mountaineering pack
Comfortable, durable, lightweight… just love it.
Brain (top cover), would be great to be able to adjust hight (velcro side), depending on the amount of load inside.
But overall great backpack.