Sherpani Solstice 18L Anti-Theft Travel Backpack review

The Sherpani Solstice is an 18L backpack sized for the space under an airplane seat. Sherpani lists it at 11.5 x 18 x 6.5 in. and 2 lb, sized as a personal item for most US airlines, with a padded compartment for laptops up to 15 in. and separate tablet and phone sleeves. Anti-theft features are Hypalon loop zipper locks, a chair loop lock, RFID-blocking technology with an RFID-protected interior zip pocket, and a slash-proof bottom. Outside there is an upper zip pocket, hidden front pockets and a water bottle pocket that zips away when not in use, plus a trolley sleeve for a suitcase handle. The slash protection covers less of the bag than the Pacsafe X 25L, which also takes a 16 in. laptop. The list price is $145, and Sherpani was running a 30% Black Friday sale at our check. We compared documented features and published prices.

Who it is for

flyers who want an under-seat backpack with anti-theft features

Price

$145 list price on Sherpani's US store as of November 2026, with a 30% sitewide Black Friday sale running at our check.

Solstice | Anti-Theft Travel Backpack - Carbon Black $145.00
Quoted from the vendor pricing page on November 13, 2026.

Key features

• 18L at 11.5 x 18 x 6.5 in. and 2 lb
• Padded laptop compartment for up to 15 in. plus tablet and phone sleeves
• Hypalon loop zipper locks and a chair loop lock
• RFID-blocking technology and an RFID-protected interior zip pocket
• Trolley sleeve, hidden front pockets and a zip-away water bottle pocket

Strengths and weaknesses

• Strength: Sherpani says it fits the personal item size for most US airlines
• Strength: Trolley sleeve slides onto a suitcase handle
• Strength: Recycled nylon shell
• Weakness: Slash-proof protection is listed for the bottom only
• Weakness: Laptop compartment fits up to 15 in., smaller than the Pacsafe X 25L
• Weakness: 2 lb empty

Key facts

• Price: $145 list
• Capacity: 18L
• Dimensions: 11.5 x 18 x 6.5 in.
• Weight: 2 lb
• Laptop: Up to 15 in.

Where it ranks

Sherpani Solstice 18L Anti-Theft Travel Backpack is No. 7 in our Best Anti-Theft Travel Bags verdict.