Osprey Arcane Large Day Backpack, 20L, Black

Black: The Osprey Arcane Large Day is a unisex everyday backpack with a listed 20-litre capacity, laptop sleeve and several storage pockets. Its J-zip access and padded sleeve suit carrying study or daily essentials, while the capacity may be limiting for bulky loads.

At a glance

A padded sleeve is listed for most laptops up to 16 inches, with a separate document or tablet sleeve.
The J-zip front-panel opening provides access to the main compartment.
Front, side, shoulder-strap and internal storage features support separating everyday items.
The material listing specifies recycled 300D polyester with ripstop and a DWR treatment made without PFAS.

Price

£66.50Save 34%

Reference price: ~~£100.00~~

Price checked: 14 Nov 2026

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Pros and cons

Pros

Laptop and document sleeves provide dedicated places for electronics and papers.
The shoulder-strap mesh sleeve is intended for a transport card or small item, keeping it readily accessible.
A bottle pocket and padded straps add useful features for daily school, university or leisure use.

Cons

The listed capacity is around 20 litres, so it may not suit buyers who regularly carry bulky or extensive gear.

Technical specifications

26 specifications

Identity
Brand	Osprey
Model	Arcane Large Day
Colour	Black
Design	Daypack Backpack
Intended users	Unisex

Capacity and dimensions
Capacity listed in title	21L
Storage volume	20 Liters
Size	O/S - Capacity 20L
Dimensions (D x W x H)	22D x 30W x 45H centimetres
Weight listed	1.48 Pounds

Storage and access
Maximum compatible device size	16 Inches
Main access	J-zip large front panel access to main compartment
Laptop sleeve	Padded sleeve fits most laptops up to 16", plus additional document/tablet sleeve
Pockets	1 hidden front zipper pocket, 1 elastic side pocket for bottles, 1 pocket on the left shoulder strap, and internal pockets including a laptop sleeve, a document sleeve, and a zipper pocket.
Front pocket feature	Large zippered front panel scratch-free pocket
Closure	Zipper
Security hook	Quick-release aluminum security hook on harness
Shoulder-strap sleeve	Stretch power mesh shoulder strap sleeve for transportation cards or small items

Materials and protection
Material listed	bluesign® approved, 100% recycled 300D polyester w/ ripstop, DWR treatment made without PFAS
Water resistance listed	Water Resistant
Shell type	Soft Shell

Carry and care
Strap type	Padded Strap
Strap size	50 cm - 85 cm
Care instructions	Wipe with Damp Cloth

Additional details
Model number	10006538
Country of origin	Vietnam

What to know before buying

Listing details to confirm

Capacity is inconsistent across listing details: the title says 21L, while the storage volume and size fields say 20 Liters and O/S - Capacity 20L. Confirm the capacity for the selected listing. The product is described as water resistant, but no waterproof rating is supplied.

Who is it for?

A good fit for

Daily commuting, school or university use with a laptop up to the listed size limit.
Buyers who want an everyday pack with separate document storage, a bottle pocket and quick-access small-item storage.
Those preferring the listed recycled ripstop fabric and a DWR treatment made without PFAS.

Less suited to

People who need a confirmed capacity above 20 litres or substantial space for bulky loads.
Anyone needing an explicitly waterproof pack or a documented waterproof rating.

Osprey Arcane Large Day Backpack, 20L, Black · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.7 / 5 · 32 ratings

5 stars82%82%
4 stars9%9%
3 stars9%9%
2 stars0%0%
1 star0%0%

Aggregate ratings lean positive, with most ratings in the five-star category and some three- and four-star ratings. This is a limited indication of overall reception, not detail about what customers liked or disliked. The rating alone cannot confirm fit, comfort or how well the stated pockets and laptop sleeve work in practice.

Frequently asked questions

What capacity does the Arcane Large Day have?

The listing is inconsistent. Its title states 21L, while the storage volume and size fields specify 20 litres. Check the selected listing before buying if capacity is important.

What size laptop does the sleeve fit?

The listing says the padded sleeve fits most laptops up to 16 inches. Check your device dimensions as well as its screen size.

Is this backpack waterproof?

It is described as water resistant and has a DWR-treated fabric, but the listing does not provide a waterproof rating. Do not assume it is suitable for prolonged or heavy rain.