AER Travel Pack 3 vs City Pack 2 Ultra vs Tech Sling 3 X-Pac - Which One Should You Buy?

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AER Backpack Review: Travel Pack 3 vs City Pack 2 Ultra vs Tech Sling 3 - Which One Should You Buy in 2025?
Choosing the right AER backpack can be overwhelming with so many premium options available. After extensive testing of three popular AER bags - the Travel Pack 3, City Pack 2 Ultra, and Tech Sling 3 X-Pac - we've created this comprehensive comparison to help you make the best decision for your needs and budget.
AER Travel Pack 3: The Ultimate Travel Companion
The AER Travel Pack 3 stands out as the largest option in this comparison, designed specifically for travelers who need maximum storage capacity. This backpack easily accommodates both a 16-inch MacBook Pro and a 14-inch work laptop simultaneously, plus additional gear like a Steam Deck and clothing for extended trips.
Key features include three separate compartments for organized packing, a dedicated laptop section, and durable construction that withstands daily abuse. After over a year of consistent use across domestic and international flights, this backpack maintains its professional appearance and structural integrity. The main drawback is its heavier weight compared to other options, making it less ideal for minimalist packers.
AER City Pack 2 Ultra: Lightweight Performance for Professionals
The City Pack 2 Ultra revolutionizes everyday carry with its ultra-lightweight fabric that feels almost weightless while maintaining durability. This backpack targets professionals who prioritize portability without sacrificing functionality for work essentials.
Despite its compact appearance, the City Pack 2 Ultra still accommodates both 14-inch and 16-inch MacBooks in its dedicated laptop compartment. The wide-opening design provides easy access to contents, while multiple organizational pockets keep smaller items secure. However, space limitations mean you'll need to choose carefully what to pack - bulky items like thick hoodies may not fit comfortably.
AER Tech Sling 3 X-Pac: Surprising Capacity in a Single-Strap Design
The Tech Sling 3 X-Pac challenges expectations by fitting a 14-inch MacBook Pro in what appears to be a compact sling bag. The striking orange interior adds a modern aesthetic touch while providing excellent visibility for contents.
This versatile carry option works perfectly for coffee shop sessions, quick errands, or situations where a full backpack feels excessive. Multiple compartments include easy-access pockets for phones and accessories, plus deeper storage for tablets and other electronics. The adjustable single strap allows for comfortable wearing across the chest or over the shoulder.
Which AER Backpack Should You Choose?
Your ideal AER backpack depends on your specific use case and carrying preferences. Choose the Travel Pack 3 if you frequently travel with multiple devices and need maximum storage capacity. The extra weight becomes worthwhile when you can pack everything in one organized bag for flights and extended trips.
Select the City Pack 2 Ultra for daily commuting and office work where weight matters more than maximum capacity. Its professional appearance and lightweight design make it perfect for business environments and public transportation.
Consider the Tech Sling 3 X-Pac for minimal carry situations, coffee shop work, or as a secondary bag for specific occasions. Its unique form factor and surprising capacity make it ideal for users who prefer single-strap convenience over traditional backpack designs.
Final Verdict: Premium Quality Across All Options
All three AER bags deliver exceptional build quality, thoughtful design, and practical functionality that justify their premium pricing. The modular approach allows users to select different bags for different situations rather than compromising with a single option that tries to do everything.
For the complete video review showing detailed demonstrations of each backpack's features and real-world packing tests, watch our comprehensive comparison above. You'll see exactly how each bag performs and get a better sense of their size differences and organizational capabilities.
This review is based on personal experience and testing. This is not sponsored - all Aer bags were purchased with my own money. Individual needs may vary, and we recommend considering your specific use case when making a purchase decision. Some links in this article may be affiliate links, which means we may earn a small commission if you make a purchase through them, at no additional cost to you.
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