Summarized Reddit Comments on Travel Slings:

Bellroy Venture Sling 2.5L:

• Geared towards travel with internal pockets for organization.
• Can fit a 16oz water bottle and other daily essentials.
• Might need the 6L version for larger loads.
• Well thought out and functional design.
• Might struggle to fit a 15.6-inch laptop inside.

Tomtoc Compact EDC Sling:

• Cheaper alternative to Aer Travel Sling 2.
• Similar features such as fitting a laptop, book, water bottle, and lunchbox.

Aer Travel Sling 2:

• Fits a 15.6-inch laptop, a book, a water bottle, and a lunchbox.
• Can wear it on the front but might feel the buckle in the back.
• Works well as a daypack or personal item for travel.

Aer Day Sling 3:

• Fits an 11” iPad, a water bottle, battery pack, and small items comfortably.
• Might not be ideal for wearing in the front.
• Aer Travel Sling 2 could be used in combination with Travel Pack 3 for travel.

Alpaka Go Sling Nano:

• Fits essentials like sunglasses, wallet, AirPods, keys, and Kindle.
• Suggested for those who don't like placing items against nylon surfaces.

Tom Bihn Daylight Briefcase:

• Can fit a Paperwhite Kindle and offers great weatherproofing.
• Well-made and comes in different colors.

Other Sling Options:

• Timbuk2 Classic Messenger Bag is a suitable alternative.
• Nomatic 6L is ideal for travel with unique strap attachments.
• Consider sling bags from brands like Bellroy, Alpaka, and Rework for different features and sizes.

Additional Comments:

• Discussion around the functionality of sling rings in Marvel movies and characters.
• Differences in sling sizes and designs for various body types and preferences.
• Recommendations for stores in Europe and Canada stocking different sling bag brands.
• General tips and opinions on different sling bags and their capabilities.