Camelbak Octane XCT 6.5L Black & Blue

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Camelbak Octane XCT 6.5L Black & Blue

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CamelBak's Octane series are made from ultra-light materials so they’re good for adventure racing, trail running or XC bike riding – anything where you need to move fast and minimize weight.

The Octane XCT takes this approach to extremes by stripping the pack down to the basics. Inside you’ll find our 3 liter Antidote Reservoir, which drops in behind the back panel. Outside we’ve added a single vertical zip storage pocket on the front and two stash pockets on the waist belt and harness so you can keep essentials close at hand. For safety we’ve added reflectivity front and back and a whistle on the harness.

Product Features:

ANTIDOTE™ RESERVOIR FEATURES: Quick Link™ System, 1/4 turn - easy open/close cap, lightweight fillport, dryer arms, center baffling and low-profile design, patented Big Bite™ Valve, HydroGuard™ technology, PureFlow™ tube, easy-to-clean wide-mouth opening

KEY PACK FEATURES: Ultra-light materials, essentials pocket, front and back reflectivity, safety whistle, overflow storage bungee

DESIGNED TO CARRY: Extra layers, ultra-light weather protection, trail maps, energy bars

Product Specifications:

  • Hydration Capacity: 100 oz / 3 L
  • Total Capacity: 210 cu in / 3.5L+ 3L Reservoir
  • Total Weight (Pack and Reservoir): 0.704 lbs / 0.32 kg
  • Dimensions: 17 X 24 X 4.75 in / 43 X 61 X 12 cm
  • Torso Length: 15 in / 39 cm
  • Empty Reservoir Dimensions: Air Mesh
  • Full Reservoir Dimensions: Fixed 25mm / 1" with cargo pockets
  • Materials: Independent Suspension™ with dual pockets and Slider™ Sternum Strap

CamelBak® Got Your Bak™ Guarantee: If we build it, we'll Bak it™ with our lifetime guarantee.

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Delivery and Returns


SPRINT Next working day FREE on orders over £100
(£6 for orders up to £100)
RUN 2-3 working days FREE on orders over £50
(£3 for orders up to £50)
Royal Mail
CLICK & COLLECT (Glasgow) 1-2 Working days FREE  
SATURDAY DELIVERY 1 working day £12 Royal Mail

Orders received before 2pm (Monday-Friday) are processed on the same day - after 2pm orders will be processed on the next working day.

Click & Collect

Collect your order in person from the achilles heel Glasgow running shop. Orders placed before 2pm will be available for collection on the next working day; orders placed after 2pm will be available for collection in 2 working days. Orders placed over the weekend will be available for collection on the Tuesday.

As soon as your order is ready for collection we will email to let you know. When you collect your order please ensure you bring your order confirmation & identification.

International Delivery

We'll package and post your order to most locations across the world as quickly as we can - for full details of delivery charges for international orders check our delivery charges page.

Spend £200+ and get FREE EU delivery.


At achilles heel we aim to please, so if you're not completely satisfied with your order, we'll do whatever we can to make it better. Items can be returned for free for an exchange or a refund within 28 days of purchase - we offer free & easy tracked returns via Royal Mail, for full details please check our returns page.


It can be hard to get things right so we are giving 28 days from Christmas Day to return your gifts on all orders made during November and December. Our returns policy will revert to the standard 28-day period for items purchased after December 31st.

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