Peak Design 45L Travel Backpack Ocean

SKU: PDBTR45DS3 MFR: BTR-45-DS-3
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Key Features

  • Effortlessly expand this versatile travel backpack from 35L to 45L for all your adventures.
  • Keep your gear safe with the weatherproof 400D nylon exterior, perfect for any journey.
  • Enjoy superior comfort and support with the stowable sternum strap on your daily commute.
  • Organize your tech with dedicated sleeves for up to a 16" laptop and a tablet.
  • Experience ultimate durability with UltraZips and reinforced stress points for lasting use.
  • This stylish backpack is ideal for both short trips and extended travel, offering ample capacity.
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On Backorder?Expected Availability: 10/2025
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Review Summary

Peak Design 45L Travel Backpack Specifications

  • Available Colors

    Eclipse, Ocean

  • Material

    Weatherproof 100% recycled 400D nylon Versa Shell external fabric. DWR impregnated and double poly coated for water resistance
    900D waterproof bottom liner
    High-visibility gray nylon interior
    Hardware is anodized aluminum and glass-reinforced nylon
    Super-durable UltraZips with abrasion-resistant UHMPE thread
    Hypalon zip pulls and reinforced stress points

  • Capacity

    Standard (max carry-on): 2135.8 cu. in (35L)
    Compressed: 1830.7 cu. in (30L)
    Expanded: 2746.1 cu. in (45L)

  • PD Packing/Camera Cube Capacity

    3 units + bonus space

  • Laptop/Tablet Carry

    Laptop: 16 x 11 x 1" (40.6 x 30 x 2.5cm)
    Tablet: 9.5 x 7.5 x 0.6" (24 x 19 x 1.5cm)

  • Dimensions

    External:
    Standard: 22 x 13 x 9.5" (56 x 33 x 24cm )
    Compressed: 22 x 13 x 9.5" (56 x 33 x 24cm) (compression only happens at the top of the bag. 6" at top when compressed)
    Expanded: 22 x 13 x 11" (56 x 33 x 29cm)

    Internal:
    Standard: 21 x 13 x 6.5" (53.3 x 33 x 16.5cm)
    Compressed: 21 x 13 x 5.5" (53.3 x 33 x 14cm)
    Expanded: 21 x 13 x 7.5" (53.3 x 33 x 19cm)

  • Weight

    4.5 lbs (2.05kg)

  • UPC Code

    818373028503

About Peak Design 45L Travel Backpack

A rugged, expandable, and brilliantly accessible carry-on travel backpack driven by a simple truth: No Two Trips The Same. Features top, side, front and rear access via weatherproof #8 and #10 UltraZips, which can withstand decades of use thanks to their proprietary abrasion-resistant thread.

Meets international carry-on size requirements, but expands to be a 45L gear-hauler and collapses to be a 35L day bag, making it unmatched for 1-bag travel. Quick-access pockets for keys, glasses, passport, etc. Hugely expandable side pockets for water bottles, tripods, and more. Padded laptop + tablet sleeves. Main cavity is divisible into 2 compartments via a zippered mesh sleeve. Tuck-away shoulder straps and hip belt. 360-degree grab handles. Cleverly concealed external carry straps. All packed within a sleek, weatherproof 100% recycled 400D nylon canvas shell with 900D bottom liner. Fair Trade Certified and 100% carbon neutral.

Works seamlessly with Peak Design Packing Cubes, Camera Cubes, and Pouches, sold separately.

Make It A Camera Bag
Throw a Peak Design Camera Cube into your Travel Backpack and instantly turn it into the most versatile and capable travel camera bag on the planet. Both sizes fit up to a Large Camera Cube and provide convenient rear access. The 45L also provides dual side access, so you can grab your camera without taking the bag off.

Access & Expansion
The bag offers multiple access points including rear access via a burly #10 UltraZip, dual side access, and a front zip panel for additional storage and organization. Expansion zips allow for fitting more or compressing your load, and a soft-lined zippered top pocket is perfect for keys, glasses, and passports.

Internal & External Organization
Internally, the bag features padded, dedicated laptop and tablet sleeves, as well as clip-in points for Peak Design Camera Cubes. Externally, it includes hugely expandable side pockets for water bottles and tripods, plus external carry straps that stow beneath a magnetic flap.

Travel & Security Features
Approved for international carry-on, the bag includes a luggage pass-through for roller bag carry and a protected luggage tag holder. It is equipped with theft-deterrent zipper pulls and designed to fit Peak Design Packing and Camera Cubes (fit 3 units with space for more).

Comfort & Carrying Options
Padded shoulder and waist straps stow under magnetic flaps for worry-free bag-checking, with axial strap attachments providing all-day comfort for all body types. The bag also includes a stowable sternum strap and 360-degree grab handles for versatile carrying options.

Material & Durability
Constructed from a weatherproof, 100% recycled 400D nylon canvas shell with a rugged 900D waterproof bottom liner, the bag features ultralight padded foam for security and structure around the entire bag. The high-visibility gray interior makes it easy to find items inside.

Sustainability
The bag is Fair Trade Certified and 100% carbon neutral, reflecting a commitment to ethical manufacturing and environmental responsibility.

Peak Design 45L Travel Backpack Features

  • Quick-access pockets for keys, glasses, passport, etc
  • Main cavity is divisible into 2 compartments via a zippered mesh sleeve
  • The bag also includes a stowable sternum strap and 360-degree grab handles for versatile carrying options
  • Fair Trade Certified and 100% carbon neutral

Warranty Information

This product has a limited lifetime warranty.

Key Features

  • Effortlessly expand this versatile travel backpack from 35L to 45L for all your adventures.
  • Keep your gear safe with the weatherproof 400D nylon exterior, perfect for any journey.
  • Enjoy superior comfort and support with the stowable sternum strap on your daily commute.
  • Organize your tech with dedicated sleeves for up to a 16" laptop and a tablet.
  • Experience ultimate durability with UltraZips and reinforced stress points for lasting use.
  • This stylish backpack is ideal for both short trips and extended travel, offering ample capacity.

What's in the box:

  • Peak Design 45L Travel Backpack
  • 2x Cord Hook External Carry Straps
  • Stowable Sternum Strap
  • Peak Design Lifetime Limited Warranty