Tom Bihn Techonaut / Aeronaut 45 Packing Cubes review

Tom Bihn's Techonaut / Aeronaut 45 Packing Cubes are made for one-bag travel. They are sized for the main compartment, end pockets and bottom pocket of Tom Bihn's Techonaut 45 and Aeronaut 45, though the company says they work in many other bags. The Large measures 13.4 x 13.4 x 4.3 inches, holds 12.5 L and weighs 3.6 oz; the Small is 13.4 x 6.7 x 4.3 inches and 5.5 L at 2.2 oz; and the End Pocket cube, all fabric, is meant for a pair of shoes. Laundry versions swap in mesh on both sides. The fabric is 100d Piscine with #5 YKK coil zippers, and the cubes are made in Seattle. Each cube costs $25 and carries Tom Bihn's lifetime guarantee and 60-day returns. There is no compression, and some sizes showed as sold out when we checked, so availability can be patchy.

Who it is for

one-bag travelers with a 45 L travel pack

Price

$25 per cube.

$25
Quoted from the vendor pricing page on November 12, 2026.

Key features

• Five versions: Small, Small Laundry, Large, Large Laundry and End Pocket
• Large holds 12.5 L at 13.4 x 13.4 x 4.3 in. and weighs 3.6 oz
• Small holds 5.5 L and weighs 2.2 oz
• 100d Piscine fabric with #5 YKK coil zippers
• Made in Seattle, WA, USA

Strengths and weaknesses

• Strength: Lifetime guarantee and 60-day returns
• Strength: Laundry versions have mesh on both sides
• Strength: Light: the Large weighs 3.6 oz
• Weakness: No compression zipper
• Weakness: Some sizes were sold out when we checked
• Weakness: Built for Tom Bihn's 45 L bags, so fit elsewhere varies

Key facts

• Sizes: Small, Large, End Pocket, plus Laundry versions
• Large: 13.4 x 13.4 x 4.3 in., 12.5 L
• Small: 13.4 x 6.7 x 4.3 in., 5.5 L
• Fabric: 100d Piscine
• Made in: Seattle, WA, USA
• Guarantee: Lifetime, 60-day returns

Where it ranks

Tom Bihn Techonaut / Aeronaut 45 Packing Cubes is No. 8 in our Best Packing Cubes verdict.