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A cycling hydration pack keeps your water supply on your back or waist so you can drink while riding. The first things to compare are reservoir size, the harness that keeps the pack steady, and how much room you need for tools and layers.

Some packs below are built for mountain bike trails, others for everyday or short rides, and a few for younger riders. If you prefer bags that mount to the bike instead of your body, see our bike bag types guide.

Every specification on this page comes from each product’s Amazon listing (item data from Amazon’s Creators API), checked on 2 November 2026. We have not used these products ourselves, so the picks are based on published specifications only.

For the rest of your trail setup, see our mountain bike gear checklist.

Quick picks

How we chose these

  • Reservoir size Compare the ounce or liter figure and check whether a bladder is included.
  • Carry style A backpack, a lumbar waist pack and a frame-mounted pack each sit differently while you ride.
  • Fit and bounce control Look for sternum straps, stability belts, and ventilated back panels or harnesses.
  • Weight and storage Note the stated weight and the pockets or tool spaces each maker describes.

Where a listing does not give a weight or volume, the table says Not stated rather than estimating.

Comparison table

Product Reservoir Weight Best for
1. CamelBak Mule 100oz 100oz (3L) Crux reservoir 1.83 Pounds Technical trail riding
2. CamelBak Mule 12 100oz 100oz Crux reservoir 1.28 pounds All-day trail riding
3. Osprey Raptor 14L Men’s Osprey Hydraulics LT 2.5 L 2.2 pounds Bike park and all-day MTB
4. USWE MTB Hydro 2.0 L / 70 oz Elite bladder (features) 1.3 lb MTB and e-MTB riding
5. USWE Race 2.0 2.0 L / 70 oz Elite bladder 0.5 lb excluding hydration system and sleeve Racing and fast trail riding
6. MSR Low-Profile Race 2-liter (70 oz) bladder 1.38 pounds Dirt bike, MX and enduro
7. USWE Outlander 9L Varies by option 309g excluding bladder Cycling, MTB and trail running
8. Osprey Berm 8L Osprey Hydraulics LS 2.5 L 1.3 lb Mid-distance trail rides
9. Arvano MTB 2L 2L / 70 oz bladder 1.15 lb MTB and general cycling
10. Clakllie MTB Pack 2-liter bladder included 0.75 lb Compact MTB riding
11. Osprey Seral 4L Osprey Hydraulics LS Lumbar 1.5 L Not stated Riders who want a waist-carry pack
12. Osprey Savu 2L Bottles sold separately 0.7 lb Single or dual bottle carry
13. CamelBak Mule Frame Large Integrated 2L Quick Stow reservoir 0.53 pounds Frame-triangle carry
14. CamelBak Classic 85oz 85oz Crux reservoir 0.9 Pounds Everyday rides
15. CamelBak Hydrobak 50oz 50oz Crux reservoir 0.84 pounds Short rides and commutes
16. CamelBak Classic Light 70oz / 2L Crux reservoir 0.9 Pounds Warm-weather everyday rides
17. CamelBak Hydrobak Light 50oz / 1.5L Crux reservoir 0.35 Pounds Fast, short rides
18. USWE Outlander 2L 1.5 L / 50 oz Elite bladder 309g excluding bladder Shorter rides and runs
19. N NEVO RHINO 50oz 50 oz / 1.5L BPA-free bladder 0.67lb / 305g Day rides and cycling
20. CamelBak Mini MULE 50oz 50oz reservoir 0.9 Pounds Younger riders

Weight and reservoir figures come from each listing. Not stated means the listing gives no value.

Trail and mountain bike packs

Backpacks built around harness stability and larger reservoirs for rough terrain.

1. CamelBak Mule Bike Hydration Pack 100oz: for long, technical mountain bike rides

CamelBak calls this a bike-specific design with 12L of storage and a 100oz reservoir for hard trail rides. The maker lists a ventilated harness, an adjustable sternum strap and a removable stability belt to limit movement.

  • Air Director back panel for airflow on climbs (CamelBak)
  • Dimensions 8.66 x 8.66 x 17.72 inches (CamelBak)

2. CamelBak Mule 12 Bike Hydration Pack 100oz: for all-day trail riding and climbs

CamelBak says this model was reworked for comfort over long miles, with a 100oz Crux reservoir and a quick connection for filling. The listing adds an Air Support back panel and magnetic tube management to keep the drink tube within reach.

  • Helmet carry and removable waist strap (CamelBak)
  • Dimensions 8.27 x 8.27 x 18.5 inches (CamelBak)

3. Osprey Raptor 14L Men’s Mountain Bike Hydration Pack: for bike park days and all-day MTB rides

Osprey calls the Raptor its flagship MTB pack, with a winged shoulder harness and a wrap hipbelt for control on rough terrain. It includes a tool roll and a 2.5 L Hydraulics LT reservoir.

  • Stretch mesh zippered hipbelt pockets for small items (Osprey)
  • Dimensions 10.6 x 11.0 x 18.5 inches (Osprey)

4. USWE MTB Hydro Hydration Pack: for MTB and e-MTB riders who want a snug fit

USWE describes a four-point NDM 1.2 harness meant to keep the pack from bouncing on rough trails. The pack includes a 2.0L / 70oz bladder with a slider opening and a water-resistant phone pocket.

  • Chest fit range 33 to 43 inches (USWE)
  • Detachable organizer pocket for tools and nutrition (USWE)

5. USWE Race 2.0 Hydration Backpack: for racing and fast trail rides

USWE says the Race 2.0 is made for racing, with an ultralight mesh backplate and a harness built from breathable 3D mesh. A 2.0L / 70oz bladder and an insulated sleeve are included.

  • Insulated sleeve listed at 0.05lb (USWE)
  • Four-point suspension harness (USWE)

6. MSR Low-Profile Race Hydration Pack: for dirt bike, MX and enduro riders

MSR describes a slim pack for dirt bike, motocross, MTB and enduro riding. It includes a 2-liter bladder with a bite valve that MSR says closes itself after each sip.

  • Breathable back panel to reduce heat buildup (MSR)
  • Dimensions 15.0 x 12.5 x 4.0 inches (MSR)

7. USWE Outlander Hydration Pack 9L: for riders who want room for layers and tools

USWE says the Outlander uses its NDM Race Harness System, with elastic straps that stretch with the chest during hard efforts. A water-resistant phone pocket and a lightweight mesh back panel are included.

  • Fits torso 33 to 43 inches (USWE)
  • Ventilated shoulder straps for airflow (USWE)

8. Osprey Berm 8L Bike Hydration Pack: for mid-distance trail rides

Osprey pairs the Berm 8 with a 2.5L Hydraulics LS reservoir and a front pocket for quick-grab items. The maker lists internal mesh pockets for bike tools and an AirScape backpanel for ventilation.

  • Removable webbing hipbelt (Osprey)
  • Ventilated bike-specific harness (Osprey)

9. Arvano Hydration Backpack 2L for MTB: for MTB and general cycling

Arvano markets this pack for MTB and general cycling, with a 2L / 70oz bladder that has a 4-inch opening for cleaning and ice. The listing includes a breathable mesh back panel and reflective strips.

  • Listed size 17.7 x 8.7 x 1.97 inches (Arvano)
  • 6L pack capacity (Arvano)

10. Clakllie Lightweight Mountain Biking Hydration Pack: for MTB riders who want a compact pack

Clakllie lists a mountain biking pack that comes with a 2-liter water bladder made of TPU. The maker describes waterproof, scratch-resistant nylon and gives dimensions of 18.1 by 8.2 by 3.9 inches.

  • Dimensions 18.1 x 8.2 x 3.9 inches (Clakllie)
  • Bladder described as TPU material (Clakllie)

Waist and lumbar packs

Hip-mounted packs for riders who want water without a backpack on their shoulders.

11. Osprey Seral 4L Biking Waist Pack: for riders who want water without a backpack

Osprey calls the Seral a lumbar-style bike pack with a 1.5-liter reservoir, meant for lighter-load rides. It has a bike-specific airmesh hipbelt, an AirScape backpanel and a magnetic bite valve.

  • Glove-friendly zipper pulls and a key clip (Osprey)
  • Angled crossbody ErgoPull hipbelt system (Osprey)

12. Osprey Savu 2L Biking Waist Pack: for quick rides carried with bottles

Osprey describes the Savu as a steady lumbar-style pack that takes one or two bottles in stretch mesh pockets. The listing suggests it suits quick lunch laps and rides up to mid-length.

  • Front zippered pocket for snacks and a phone (Osprey)
  • AirScape backpanel with a center airflow channel (Osprey)

Frame-mounted packs

A pack that sits inside the bike frame triangle.

13. CamelBak Mule Frame Pack, Large: for frame-triangle carry on long rides and bikepacking

CamelBak describes this frame pack as fitting inside the bike frame triangle, with a 2L Quick Stow reservoir for long rides and bikepacking. The listing mentions a water-resistant zippered pocket and tube clip management.

  • Multiple adjustment points for varied bike geometries (CamelBak)
  • Dimensions 7.09 x 7.09 x 18.9 inches (CamelBak)

Everyday and short-ride packs

Lighter packs and mid-size reservoirs for commutes and shorter rides.

14. CamelBak Classic Bike Hydration Pack 85oz: for everyday rides with a larger reservoir

CamelBak lists this Classic pack with an 85oz Crux reservoir that has an on and off lever to help limit leaks. The maker mentions breathable air mesh and a zippered pocket for keys and small items.

  • Reflective accents for low-light rides (CamelBak)
  • Dimensions 8.66 x 8.66 x 15.16 inches (CamelBak)

15. CamelBak Hydrobak Bike Hydration Pack 50oz: for short rides, commutes and quick sessions

CamelBak describes the Hydrobak as a compact, minimalist pack for brief rides and training. It has a 50oz Crux reservoir and an air mesh back panel with a ventilated harness.

  • Zippered pocket for keys, tools or small essentials (CamelBak)
  • Model 1122001000P (CamelBak)

16. CamelBak Classic Light Bike Hydration Pack 70oz: for warm-weather everyday riding

CamelBak describes this Classic Light pack for everyday rides in warm conditions, with a 70oz / 2L Crux reservoir and a Quicklink disconnect. The listing adds bungee overflow and helmet carry.

  • Light loop, tube trap and adjustable sternum strap (CamelBak)
  • Model 2404401000P (CamelBak)

17. CamelBak Hydrobak Light Bike Hydration Pack 50oz: for fast, short rides

CamelBak calls this a low-profile pack for fast rides, with a 50oz / 1.5L Crux reservoir. It has an Air Support Light back panel for airflow and a zippered pocket for keys or a phone.

  • Helmet carry without adding pack size (CamelBak)
  • Dimensions 9.06 x 9.06 x 13.78 inches (CamelBak)

18. USWE Outlander Hydration Pack 2L: for shorter rides and trail runs

USWE says the 2L Outlander has total pack storage of 2 liters, including a 1.5L / 50oz Elite bladder with a plug-n-play coupling. It uses the NDM Race Harness System and includes a water-resistant phone pocket.

  • Fits torso 33 to 43 inches (USWE)
  • Mesh back panel for airflow (USWE)

19. N NEVO RHINO Bike Hydration Pack 50oz: for day rides and cycling with a 1.5L bladder

N NEVO RHINO describes this pack as suited to day hikes and cycling, with a 50oz / 1.5-liter BPA-free bladder. The listing mentions a push-pull bite valve, a 2-inch fill port and a roll-up design.

  • 3D mesh with honeycomb structure (N NEVO RHINO)
  • Dimensions 10.24 x 2.36 x 15.7 inches (N NEVO RHINO)

Youth packs

A smaller pack sized for younger riders.

20. CamelBak Mini MULE Hydration Pack 50oz: for younger riders on trails and rides

CamelBak says this Mini MULE is sized for smaller frames and young adventurers, with a 50oz reservoir for hikes and rides. The listing describes a stretch overflow pocket and a ventilated harness.

  • Dimensions 7.48 x 7.48 x 14.17 inches (CamelBak)
  • Integrated organization and a zippered pocket (CamelBak)

Which one fits you

Your situation Look at Why
Long mountain bike rides with a lot to carry Larger reservoir and a harness with bounce control The CamelBak Mule 100oz lists a 100oz reservoir and a removable stability belt
Short rides or commutes Smaller reservoir and low listed weight The CamelBak Hydrobak Light lists a 50oz reservoir and 0.35 Pounds
Water without a pack on your back Lumbar or waist pack The Osprey Seral includes a 1.5-liter reservoir in a waist-style pack
Riding with a younger child A pack sized for smaller frames The CamelBak Mini MULE is listed in One Size and sized for young adventurers

Practical tips

  • Check whether the reservoir is included, since the Osprey Savu lists bottles as sold separately.
  • Compare the reservoir size with your ride length, using the ounce or liter figure on each listing.
  • Look for a bike-specific harness and a ventilated back panel, which makers describe as ways to limit bounce and heat.

FAQ

Which pack suits long mountain bike rides?

The CamelBak Mule 100oz lists a 100oz reservoir and a stability belt, and Osprey calls the Raptor its flagship MTB pack. Check the stated weight and harness details before choosing.

Do I need a backpack if I only carry bottles?

A waist pack such as the Osprey Savu lets you carry bottles, but the listing says bottles are sold separately. Confirm what is included before ordering.

Are these packs suited to running too?

Several listings here also promote running or hiking. Check the bike-specific features, such as the harness and reservoir fit, against your riding.

Sources

Specifications from each product’s Amazon listing, checked 2 November 2026: CamelBak Mule Bike Hydration Pack 100oz, CamelBak Mule 12 Bike Hydration Pack 100oz, Osprey Raptor 14L Men's Mountain Bike Hydration Pack, USWE MTB Hydro Hydration Pack, USWE Race 2.0 Hydration Backpack, MSR Low-Profile Race Hydration Pack, USWE Outlander Hydration Pack 9L, Osprey Berm 8L Bike Hydration Pack, Arvano Hydration Backpack 2L for MTB, Clakllie Lightweight Mountain Biking Hydration Pack, Osprey Seral 4L Biking Waist Pack, Osprey Savu 2L Biking Waist Pack, CamelBak Mule Frame Pack, Large, CamelBak Classic Bike Hydration Pack 85oz, CamelBak Hydrobak Bike Hydration Pack 50oz, CamelBak Classic Light Bike Hydration Pack 70oz, CamelBak Hydrobak Light Bike Hydration Pack 50oz, USWE Outlander Hydration Pack 2L, N NEVO RHINO Bike Hydration Pack 50oz, CamelBak Mini MULE Hydration Pack 50oz. Makers can change specifications; check the product page before you buy.