Aer Travel Pack 4 35L review

Aer's Travel Pack 4 35L replaces the Travel Pack 3, which Aer now lists as discontinued. It is a structured, business-looking carry-on: the outer fabric is 1680D Cordura ballistic nylon and the lining is ripstop nylon, both bluesign approved, with YKK zippers and Duraflex hardware. Aer lists it at 21.5 x 13.5 x 9 inches and 3.90 lbs, so it fits the common 22 x 14 x 9 inch limit and weighs about half a pound less than the Tortuga Pro. The main compartment opens flat for packing, an internal framesheet keeps the shape, and a suspended, padded laptop pocket takes up to a 16 inch machine. Quick-access front and top pockets, two exterior bottle pockets and a hidden tracker pocket cover small items, and the zippers lock. The shoulder straps have load lifters, but a hip belt is a $20 add-on. With 35 liters and no expansion, it suits travelers who pack light; a 28L version costs $239.

Who it is for

City-focused travelers and remote workers who want a clean, structured carry-on that also works as a work bag.

Price

$259.

Travel Pack 4 35L Regular price $259.00
Quoted from the vendor pricing page on November 9, 2026.

Key features

• 1680D Cordura ballistic nylon exterior and ripstop interior, both bluesign approved
• Lay-flat main compartment and internal framesheet
• Padded, suspended laptop pocket for up to 16 in.
• Dual exterior water bottle pockets and a hidden smart tracker pocket
• Lockable zippers, luggage handle pass-through and attachment points for an optional hip belt

Strengths and weaknesses

• Strength: Lighter than the Tortuga at 3.90 lb with 35 L of space
• Strength: 21.5 x 13.5 x 9 in. stays within the common 22 x 14 x 9 in. limit
• Strength: Hard-wearing 1680D ballistic nylon and YKK zippers
• Weakness: Hip belt costs $20 extra
• Weakness: Less volume than the 40 L and 45 L bags here
• Weakness: No expansion zipper

Key facts

• Volume: 35 L
• Dimensions: 21.5 x 13.5 x 9 in.
• Weight: 3.90 lb
• Laptop: Up to 16 in.
• Hip belt: Optional, $20
• Smaller size: 28L for $239

Where it ranks

Aer Travel Pack 4 35L is No. 2 in our Best Travel Backpacks verdict.