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Rab Ascendor 45:50L Mountain Pack

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From mixed winter and summer rock routes to ice wall assaults and ski mountaineering, the Ascendor 45:50 is as versatile as you are. With its strippable features, the Ascendor transforms from a gear hauling beast to an agile summit pack for days when you’re moving fast and light.

Weight : 1.34kg
Volume : 45 + 5 Litres
Back Length : 19" / 48cm
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Rab Ascendor 45:50L Mountain Pack $185 Sizing

What It's Best For

Climb & Mountaineering

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At the top end of the Ascendor range, the Ascendor 45:50 is ideal for multiday mountaineering missions. Whether you plan to catch some rest on a high mountain bivi before a summit bid or you’re on an extended adventure moving from hut-to-hut, there’s plenty of volume for all your gear.

It’s a lidded pack with zipped side entry for quick access to kit and dedicated lower ski loops for carrying skis in an A-frame. It’s built with tough, 50% recycled fabric around the sides and base for optimum abrasion resistance, and a strong yet lighter weight, 35% recycled fabric elsewhere, to keep the weight to a minimum. Abrasion, tear, and water resistant, this rugged pack copes with all conditions.

Built with multiple gear attachment points and features, from double ice axe carry to water bladder compatibility, it’s the ultimate multi-season mountain pack. We’ve kept the weight to a minimum with lightweight features, many of which are removeable. The spring steel frame and the internal HDPE sheet can be stripped out so you can customise the weight, rigidity and fit of the pack depending on your day’s objective. The hip belt can also be personalised, with its removeable webbing and padding for days when you’re moving ultralight.

Close-fitting and designed to allow you to move freely over demanding terrain, the Ascendor 45:50 has a snow shedding, moulded back panel and side compression straps to cinch your gear secure. Easy to open and secure shut with a strong metal hook or remove the top lid completely on lighter weight days and fasten with the large compression flap. This is designed to pull the pack weight close towards your body to greatly improve the carry. It also doubles as a rope strap and protects your gear at the top of the pack from the weather when the lid is off.

When it comes to the Ascendor 45:50, we’ve got all the bases covered. Cleverly designed, multi-functional and comfortable, it’s a great choice for ambitious mountain adventures.

The Specifics

  • Volume:45+5lt /
  • Dimensions:70 x 36 x 32cm
  • Weight:1.34kg / 2lb 15oz
  • Back Length:19" / 48cm
  • Back System:TRI-FLEX™
  • Product Code:QAP-28
  • TRI-FLEX™ fixed carry system with moulded, snow shedding back panel
  • Sternum strap with whistle to attract attention
  • Top tensioner stabilises load close to your body
  • Detachable hipbelt with gear loops and removeable padding and webbing
  • A-frame ski carry option for multi-activity use
  • Upper and lower side compression straps to cinch pack secure
  • Front daisy chain and under lid rope strap for attaching gear
  • 2 HeadLocker ice axe attachments with removeable lashes
  • Top loader entry with side zip for easy access to kit
  • Main closure with strong metal buckle
  • Detachable lid with outer zip pocket and inner map pocket
  • Secure closure when lid is removed, ideal for lightweight mountain days
  • Hydration compatible with 3L bladder
  • Main Fabric: 35% Recycled 210 ROBIC DIA R/S / Trishield Dura and 50% recycled 420D Mesh Dobby / Hydroshield


Supportive and stable the TRI-FLEX™ carry system fits close to your back to enable complete freedom of movement and agility when carrying heavy loads. It's lightweight and strippable with a snow shedding back panel.


Supportive and stable the TRI-FLEX™ carry system fits close to your back to enable complete freedom of movement and agility when carrying heavy loads. It's lightweight and strippable with a snow shedding back panel.

Pack Back Length Explained

When it comes to pack comfort, the length of your back plays a key role.

Pack Back Length Explained

When it comes to pack comfort, the length of your back plays a key role.

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Rab Ascendor 45:50L Mountain Pack Reviews


Rab ships throughout the United States via USPS and FedEx Ground daily from our US warehouse in Colorado and will take between 2 and 5 days depending on your location. Orders over $50 qualify for Free Shipping, otherwise, a flat rate of $6.00 will be charged per order under $50. 2-day expedited shipping is available for a flat rate of $25. Orders must be placed before 12pm between Monday-Friday to be shipped the same day. Saturday delivery is not available.

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If you are unhappy with your purchase, please return it to us within 45 days of receipt. Please note, all orders placed before 25th December are eligible for return up until the 15th February 2024. The item(s) must be in resalable condition with tags attached. We are currently unable to exchange items and will refund products returned to us under the policy above.

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