The Best Packing Cubes for a Carry-On

Away lists the Insider Packing Cubes set of four at $48 on the official Jet Black page we fetched November 10, 2026. The four official sizes are Small Wide (10 × 4.1 × 8.25 in), Medium Slim (10 × 4.1 × 4.3 in), Medium Wide (13 × 4.1 × 10 in) and Large Slim (13 × 4.1 × 6.9 in). The set weighs 0.5 lb. The cubes are water-repellent nylon with mesh tops and can be machine-washed cold.

Away’s official FAQ is unusually clear: the cubes “do not have a separate compression zipper,” and any “mild compression” comes from containing items in the cube. That is useful if you mostly want clothes grouped, not squeezed. The product page lists 100-day unused returns. Do not read the LifetimeCare blurb on that same page as cube coverage — it is written for every suitcase. Away’s bag-and-accessory warranty language, on official bag pages we fetched the same day, is a limited one year.

Eagle Creek lists the Pack-It Isolate Cube Set (XS/S/M) at $59 on the official page we fetched November 10, 2026. Official sizes are XS 7.5 × 4.5 × 2.5 in (1 L, 0.6 oz), S 10 × 7 × 3 in (3 L, 1 oz) and M 14 × 10 × 3 in (7 L, 1.5 oz) — 11 L and 3.1 oz combined. The fabric is 100% ocean-recycled 70D nylon, made without the intentional use of PFAS. Capacities are calculated from dimensions and may vary slightly with sewing tolerances; Eagle Creek says so on the page.

This set is for organization, not compression. The compression-zipper version is a separate product (see the next pick). Warranty coverage is Eagle Creek’s No Matter What policy for the original owner: functional defects in materials and workmanship for the life of the gear — zippers, fabric tears and buckles are listed — not the owner’s lifetime, and not cosmetic damage, normal aging, or end-of-life wear. You pay shipping to an authorized repair center; Eagle Creek covers parts, labor and return shipping in-country. Purchases from unauthorized sellers are excluded. The product page also lists easy 60-day returns.

Eagle Creek lists the Pack-It Isolate Compression Cube M at $30 on the official page we fetched November 10, 2026. Uncompressed, it is 14 × 10 × 3 in and 7 L — the same outer size as the non-compression Medium in the Isolate set. With the compression zipper closed, Eagle Creek lists 14 × 10 × 1 in and 2 L. The cube weighs 2.9 oz and uses the same 100% ocean-recycled 70D nylon, made without the intentional use of PFAS. The official description is direct: a durable zipper that squeezes bulky clothing into a smaller cube.

Buy this if you actually want compression, not a synonym for “organized.” One medium cube will not replace a full set; many people add one or two to the Isolate set (or to another bag). The same No Matter What warranty and 60-day-return language appears on the product page. We have not measured how much extra clothing this zipper actually saves in a packed carry-on.