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Product guide

Osprey Skarab W/Res 18L Men's Hiking Backpack

Backpack: The Osprey Skarab W/Res is an 18-liter men's hiking daypack listed with a Hydraulics LT 2.5 L reservoir. Its light listed weight and hydration sleeve suit day hikes, while the relatively compact capacity is better suited to essentials than bulky loads.

At a glance

  • Includes a listed Osprey Hydraulics LT 2.5 L reservoir, dedicated sleeve and magnetic bite-valve attachment on the sternum strap.
  • The AirScape foam backpanel is described as breathable and close-fitting.
  • Bucket-style top-zip access is intended to make loading straightforward.
  • An under-lid zippered mesh pocket and key clip keep small essentials separate and handy.
  • The listing identifies the fit as body-specific. Its guidance describes men's packs as suited to different body shapes than women's packs.
Price
$89.95Save 25%

Reference price: $120.00

Price checked: Nov 14, 2026

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Often bought together

Pros and cons

Pros

  • A reservoir and dedicated sleeve are listed, so the pack is presented as a hydration-ready daypack rather than an empty hydration compartment.
  • The 18-liter capacity and listed 1.1-pound weight support a relatively light carry for day hikes and everyday leisure use.
  • The top-zip opening and key-clip mesh pocket provide practical access and organization for small items.

Cons

  • At 18 liters, capacity may be limiting for buyers who need to carry bulky layers or gear for longer outings.
  • The listing says the Hydraulics Quick Connect is sold separately, so it is not part of the included reservoir setup.

Technical specifications

24 specifications
Identity and capacity
BrandOsprey
ModelSkarab W/Res
Storage volume18 liters
Pack typeDaypack Backpack
Fit typebody-specific
SizeO/S
ColorBlack
Dimensions and weight
Dimensions (D × W × H)7.9"D x 10.2"W x 18.9"H
Weight listed1.1 pounds
Materials and protection
Outer materialPolyester
LiningNylon
Shell typeSoft Shell
Water resistance listedWater Repellent
Care instructionsHand Wash Only
Storage and adjustment
Pockets4
Compartments1
Pocket descriptionUtility Pocket
ClosureZipper
Strap typeAdjustable
Maximum compatible device size18 inches
Hydration and design
Reservoir listedOsprey Hydraulicsâ„ LT 2.5 L reservoir
BackpanelDie-cut foam AirScape backpanel
AccessBucket style top-zip access
Additional pocket detailUnderlid zippered mesh pocket with key clip

What to know before buying

Listing details to confirm

The item-details weight is listed as 1.1 pounds, while a feature line gives 1.14lb. The reservoir is called Hydraulics LT 2.5 L, but its listing text contains garbled characters. Confirm the exact reservoir variant and weight details for the selected listing. Water-repellent wording does not claim waterproof protection.

Who is it for?

A good fit for

  • Day hikers who want a compact pack with a listed 2.5 L reservoir included.
  • Buyers who prefer a top-zip daypack with a dedicated hydration sleeve and small essentials pocket.
  • People seeking a men's body-specific fit, while taking the listing's fit guidance into account.

Less suited to

  • Hikers who need substantially more than 18 liters of storage.
  • Buyers who require a stated waterproof rating or waterproof protection.
  • Anyone who needs the Hydraulics Quick Connect included.
Osprey Skarab W/Res 18L Men's Hiking Backpack · photo 2
Additional product photo 2

Customer reviews on Amazon

4.8 / 5 · 21 ratings
  • 5 stars92%92%
  • 4 stars0%0%
  • 3 stars8%8%
  • 2 stars0%0%
  • 1 star0%0%

Aggregate ratings are generally favorable, with most ratings in the five-star category and some in the three-star category. They offer a positive but limited signal for the 18-liter pack, but provide no specific reasons for satisfaction or concern and do not establish performance details.

Frequently asked questions

Does this pack include a water reservoir?

The listing says it includes an Osprey Hydraulics LT 2.5 L reservoir, dedicated sleeve and sternum-strap magnetic bite-valve attachment. It says the Hydraulics Quick Connect is sold separately.

How much can the Skarab W/Res hold?

The listed storage volume is 18 liters, making it a daypack-sized option rather than a high-capacity overnight pack.

Is the pack waterproof?

The listing describes it as water repellent, not waterproof. No waterproof rating is provided.

What is its listed weight?

The details list 1.1 pounds, while a feature line lists 1.14lb. The listing is inconsistent, so confirm the weight for the selected version.

Osprey Skarab W/Res 18L Men's Hiking Backpack · photo 3
Additional product photo 3

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