High-Capacity Camera Travel Backpack
Think Tank Airport™ Accelerator 41L Backpack
Carry a substantial underwater photo travel kit without immediately surrendering your most valuable camera gear to checked baggage.
Transporting a complete photo kit requires maximizing interior storage without surrendering high-value equipment to checked baggage. The Think Tank Airport Accelerator 41L is a high-capacity Think Tank camera backpack built for photographers who need to carry extensive gear directly into the cabin. Featuring a 41-liter total capacity with a 28-liter main compartment, this think tank camera bag accommodates two DSLR or mirrorless camera bodies with attached lenses, two to four additional lenses, and dedicated, quick-access sleeves for a 16-inch laptop and a 10-inch tablet.
Designed specifically around the demands of transit, this Think Tank backpack combines customizable organization with practical security features. Deep, configurable padded dividers allow you to safely isolate large optics, camera bodies, and fragile accessories. To safeguard your gear on the move, this think tank bag is outfitted with locking YKK RC Fuse zippers, an integrated security cable, a concealed passport pocket, and an included seam-sealed rain cover for unpredictable weather conditions.
For underwater photographers, its real advantage is the ability to separate and protect high-value components such as the camera body, lenses, strobes, video lights, ports, batteries, and laptop while heavier arms, clamps, tools, and less fragile equipment travel elsewhere.
- Best for: Traveling DSLR or mirrorless photographers carrying a large, component-based underwater imaging kit.
- Main advantage: 41-liter total capacity with a 28-liter main compartment and highly configurable padded dividers.
- Compatibility note: Fits camera equipment by physical dimensions rather than housing brand or camera model.
- Major differentiator: More capacity than the Airport Commuter 31L, plus integrated security and storage for a 16-inch MacBook Pro and 10-inch tablet.
- Important limitation: This is not a waterproof boat bag, rinse tank, or submersible housing case.
- Why Bluewater Photo: Get help planning how your housing, ports, strobes, lenses, and accessories should be divided for travel.
Quick specifications
Compatibility
What underwater camera equipment fits?
There is no universal housing compatibility list for a soft camera backpack. Fit depends on the dimensions of your housing, handles, vacuum valve, ports, strobes, lights, and the divider arrangement you choose.
Works With
- DSLR and mirrorless camera bodies
- Macro, fisheye, and rectilinear wide-angle lenses
- Compact and full-size underwater strobes
- Video lights, focus lights, batteries, and chargers
- Small and medium ports when individually padded
- Some housing bodies after handles and accessories are removed
Requires
- Measurement against the 13 × 19.1 × 6.7-inch interior
- Padded separation between ports, lights, and housing controls
- Battery compliance with current airline regulations
- A test pack before departure
- Airline approval for current carry-on size and weight limits
Optional Gear
- Padded port and lens wraps
- Battery organizer or fire-resistant battery pouch
- Protective housing body wrap
- Compact luggage scale
- Separate hard case or boat bag for the assembled housing
Why It Stands Out
A Think Tank backpack for photographers who cannot afford to pack light
Most camera backpacks force underwater photographers to choose between capacity, travel organization, and a manageable carry profile. The Airport Accelerator 41L is built around maximum usable camera storage while remaining oriented toward airline travel.
Photographers choose it over smaller alternatives when they carry two camera bodies, several lenses, full-size strobes or lights, a laptop, and critical batteries in the cabin. A smaller Think Tank bag may be easier on restrictive regional flights, but the Accelerator is the stronger choice when leaving fragile or expensive components behind is not an option.
Practical Features
Designed around demanding photography travel

Configurable protection for irregular underwater gear
Underwater systems do not pack like ordinary camera kits. Ports are round, strobes have protruding controls, and housings require space around buttons, levers, and vacuum valves. The full-width divider and padded accessory dividers let you build zones around those shapes instead of forcing everything into standard lens-sized compartments.
- Separate fragile optics from metal housing components
- Keep batteries and small accessories from shifting
- Create a personal-item section for a jacket or travel essentials
- Reconfigure the bag for macro, wide-angle, or video trips

Better control of valuable equipment in transit
Camera bodies, lenses, strobes, and computers can represent most of the value in an underwater photographer’s luggage. Locking YKK RC Fuse zippers and the integrated cable provide a practical deterrent when the bag is beside you in an airport lounge, attached to fixed furniture, or stored during ground transportation.
- Lockable main camera compartment
- Dedicated side security pocket with cable and lock
- Hidden passport or cash pocket beneath the luggage pass-through
- Visible business card holder for easier identification

Faster airport handling without unpacking the camera compartment
Rear-panel access to the laptop and tablet makes security screening easier because your computer can be removed without opening the main equipment section. Multiple grab handles and a luggage handle pass-through also make the backpack easier to reposition in overhead bins, vehicles, and hotel rooms.
- Rear access for laptop, tablet, and paperwork
- Top, bottom, and side grab handles
- Removable stabilizer belt that tucks away
- Seam-sealed rain cover for unexpected weather
Buy With Confidence
Professional travel gear backed by specialist support
Content reviewed by Bluewater Photo staff, recognized as the #1 online retailer specializing in underwater photography and scuba diving equipment, with real-world experience supporting, selling, and configuring underwater camera systems.
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Think Tank Airport Accelerator 41L specifications
Dimensions & Capacity
- External: 13.4 W × 19.5 H × 7.9–10.2 D in.
- External metric: 34 × 49.5 × 20–26 cm
- Interior: 13 W × 19.1 H × 6.7 D in.
- Interior metric: 33 × 48.5 × 17 cm
- Total volume: 41 L
- Main compartment: 28 L
- Front pocket: 10 L
- Laptop section: 3 L
Computer & Camera Capacity
- Laptop pocket: 13 W × 18.5 H × 1 D in.
- Laptop pocket metric: 33 × 47 × 2.5 cm
- Fits a 16-inch MacBook Pro
- Fits a 10-inch tablet
- Fits two standard-size camera bodies with lenses attached
- Holds two to four additional lenses plus accessories
- Supports a lens up to 600mm f/4 when unattached
Build & Materials
- 600D polyester
- 1260D poly ballistic nylon
- 420D nylon small ripstop
- Abrasion-resistant YKK RC Fuse zippers
- Durable water-repellent coating
- Total weight: 6.15 lb / 2.8 kg
Organization & Carry
- Full-width internal divider
- Three padded dividers with accessory pockets
- Zippered lid mesh pockets
- Two zippered side pockets
- Tripod attachment straps
- Top, bottom, and side grab handles
- Luggage handle pass-through
- Removable, stowable stabilizer belt
Security & Weather Protection
- Locking main-compartment zippers
- Integrated security cable and lock
- Dedicated side security pocket
- Hidden passport or cash pocket
- Durable water-repellent exterior treatment
- Seam-sealed rain cover included
In the Box
- Think Tank Airport Accelerator 41L backpack
- Configurable padded divider set
- Two tripod straps
- Integrated security cable and lock
- Seam-sealed rain cover
- Think Tank Photo Airport Accelerator Backpack (41L)
- Set of Interior Dividers
- 2 x Tripod Attachment Strap
- Waist Belt
- Rain Cover
- Limited Lifetime Warranty
Frequently Asked Questions
Think Tank Airport Accelerator 41L FAQ
Will the Think Tank Airport Accelerator 41L fit my underwater housing?
It may fit some housing bodies, but compatibility depends on the housing’s dimensions and any protruding handles, controls, or vacuum valves. Compare your packed housing with the 13 × 19.1 × 6.7-inch interior and contact Bluewater Photo before ordering when fit is close.
Does the Airport Accelerator 41L qualify as carry-on luggage?
Think Tank states that it meets most international and U.S. carry-on requirements. Airlines set their own size and weight rules, so acceptance is never guaranteed and should be confirmed before departure.
Is the Think Tank Airport Accelerator waterproof?
No. It has a durable water-repellent coating and includes a seam-sealed rain cover, but it is not designed for immersion, rinsing equipment, or carrying a wet rig on a dive boat.
Does it fit a 16-inch MacBook Pro and a tablet?
Yes. The computer storage is designed for a 16-inch MacBook Pro and a 10-inch tablet, with rear-panel access that does not require opening the main camera compartment.
How should I pack an underwater camera system in this backpack?
Separate the camera, housing, ports, strobes, and lights into padded zones and protect all glass and protruding controls. Pack dense items near the back panel and perform a complete test pack before traveling.
Can the backpack be locked during travel?
Yes. It includes locking YKK RC Fuse zippers and an integrated security cable and lock, which provide a practical theft deterrent during transit.
What is the difference between the Airport Accelerator 41L and Airport Commuter 31L?
The Accelerator provides 41 liters of total capacity compared with 31 liters for the Commuter. It is better for larger equipment loads, while the lighter Commuter is easier to manage when you do not need the extra space.
How should I maintain the backpack after a dive trip?
Wipe away salt, sand, and dirt with a damp cloth, then allow the bag and rain cover to dry completely before storage. Inspect the zippers, seams, cable, and dividers before the next trip.
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