Patagonia Atom Tote Pack 20L vs. Attitude Supply ATD1 Backpack

Two carry-on travel backpacks, compared spec for spec.

Patagonia Atom Tote Pack 20L

Capacity20 L
Weight0.6 kg
Dimensions41×30×13 cm
Airline fit95%
Price$90

Feature by feature

Patagonia Atom Tote Pack 20LFeatureAttitude Supply ATD1 Backpack
Storage
N Compression 4
None Expanded Capacity 55L
0 Opening 1
front Passport front
N Passthrough N
Carry
Y Backpack Y
N Hip Belt removable
removable Sternum Strap removable
Inside
13in Laptop 16in
2 Main Compartments 2
Y Organizer Y
Outside
× Hard Shell ×
N Rain-fly N
2, side Water Bottle Holder 2, side
Y Water Resistant Y
Material
7.3-oz 400-denier recycled Polyester with DWR FinishChallenge Sailcloth Ecopak® EPLX600

Attitude Supply ATD1 Backpack

Front facing view of the Attitude Supply ATD1 Backpack
Capacity23 L
Weight1.7 kg
Dimensions50×30×26 cm
Airline fit17%
Price$523

Key differences between the Patagonia Atom Tote Pack 20L and Attitude Supply ATD1 Backpack

Both have: passport pocket, backpack straps, sternum strap, built-in organizer, water bottle pockets, water resistant.

Which airlines take each bag as a carry-on

We checked both bags against the carry-on size limits of 189 airlines. 32 accept both. 148 accept only the Patagonia Atom Tote Pack 20L, and 0 accept only the Attitude Supply ATD1 Backpack.

Only the Patagonia Atom Tote Pack 20L fits

Aegean Airlines, Aer Lingus, Aeroflot, Aerolineas Argentinas, Aeromexico, Air Asia, Air Astana, Air Baltic, Air Canada, Air Caraibes, Air China, Air France, Air India, Air Macau, Air Malta, Air Mauritius, Air Niugini, Air Nostrum, Air Serbia, Air Seychelles, Air Tahiti, Air Wisconsin, AirAsiaX, Alaska Airlines, All Nipon Airways, Allegiant Air, American Airlines, American Eagle, ANA, Asiana Airlines, ATA Airlines, Atlas Global, Austrian, Avianca , Azerbaijan Airlines, Bahamasair, Bangkok Airways, Belavia, Biman Bangladesh, Blue Air, Boliviana de Aviacion, British Airways, Brussels Airlines, Bulgaria Air, Cambodia Angkor Air, Cathay Pacific, Cayman Airways, Cebu Pacific, China Airlines, China Eastern, CommutAir, Conviasa, Czech Airlines, Delta Airlines, Dragonair, easyJet, EL AL, Emirates Airlines, Enter Air, Ethiopian Airlines, Etihad Airways, Eurowings, EVA Air, Fiji Airways, Finnair, Flair Air, flybe, Garuda Indonesia, Gol Linhas Aereas, Gulf Air, Hawaiian Airlines, Hong Kong Airlines, Iberia, Icelandair, Indigo, InselAir, Interjet, Iran Air, Iran Aseman Air, Japan Airlines, Jet Airways, Jet2, jetBlue Airways, Jetstar Airways, Jetstar Asia, Juneyao Airlines, Kenya Airways, KLM, Kulula, Kuwait Air, LATAM , Liat Airlines, LOT Polish, Lufthansa, Luxair, Mahan Air, Malaysia Airlines, Mango, Meridiana Fly, Mesa Airlines, Middle East Airlines, Monarch Airlines, Nordwind Airlines, Norwegian, Oman Air, Onur Air, Pakistan International, Peach, Porter Airlines, Qantas Airways, Qatar Airways, Ravn Alaska, Regional Express, Republic Airways, Royal Brunei Airlines, Royal Jordanian, Ryanair, S7, SAS Scandinavian, Scoot, Shandong Airlines, Shenzhen Airlines, Sky Airlines, Skywest, Inc., South African Airways, SriLankan Airlines, Sun Express, Swiss Int'l Air Lines, TAP Air Portugal, TAROM, Thai Airways, Tianjin Airlines (A320 & E190), Tiger Airways, Trans States, Travel Service Airlines, TUI, Turkish Airlines, Ukraine International, United Airlines, Uzbekistan Air, Vietnam Airlines, VIM Airlines (Closed), Virgin Atlantic, Virgin Australia, Volotea, WestJet, WOW Airlines, Xiamen.

Patagonia Atom Tote Pack 20L vs. Attitude Supply ATD1 Backpack: which should you pack?

The Attitude Supply ATD1 Backpack carries 3L more than the Patagonia Atom Tote Pack 20L (20L vs. 23L), while the Patagonia Atom Tote Pack 20L is the lighter pack at 0.6kg (vs. 1.7kg). For carry-on flexibility, the Patagonia Atom Tote Pack 20L fits 95% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the Attitude Supply ATD1 Backpack; if you want to travel lighter, the Patagonia Atom Tote Pack 20L is the better call.