Thule Shield Attache InLock 16 — Thule briefcase / attache model 5479 with InLock for 16" laptops

The Thule Shield Attache InLock 16 (model 5479) is a protective briefcase designed to carry and secure a 16" laptop with integrated features for everyday commuting and business travel. The case combines structured internal protection, organized compartments for documents and accessories, and a professional exterior. It is compatible with Thule’s InLock system (universal panel sold separately) for secure attachment to a variety of bike racks, while also functioning as a comfortable, hardware-free shoulder or hand carry bag.

Advantages

The Attache provides padded protection for a 16" laptop and separate organization for a tablet, files and smaller accessories. Its IPX4-rated construction includes sealed zippers and welded seams to protect contents from splashes and light rain. A soft InLock connection minimizes rattling during transport by bike, and reflective trim increases visibility from the side, front and back. The detachable shoulder strap and hardware-free design add carrying comfort off the bike.

Suitable for

• Commuters who cycle and need a secure, bike-compatible briefcase
• Business travelers who require a professional-looking case with laptop protection
• Students or professionals who carry a 16" laptop, tablet, documents and accessories
• Users needing weather-resistant protection for electronics during daily use

When it may not be suitable

This attache is sized specifically for laptops up to 16"; larger laptops will not fit. The product relies on the Thule InLock universal panel for bike-attachment functionality, which is sold separately, so users seeking an all-in-one bike mounting solution without additional purchases should consider alternatives. While IPX4 offers protection from splashes and light rain, the case is not rated for full immersion or heavy downpours.

Key specifications

• Compatible laptop size: up to 16"
• Weather protection rating: IPX4 with sealed zipper and welded seams
• Protection: padded laptop compartment and structured internal protection
• Attachment: compatible with Thule InLock system (universal panel sold separately)
• Carrying options: detachable shoulder strap; hardware-free carry design
• Visibility: reflective trim on multiple sides
• Ride comfort: soft InLock connection for reduced rattle

How to use

Place a laptop up to 16" into the padded compartment and organize tablet, documents and smaller items in the internal pockets. Use the sealed main zipper to close the attache and route the detachable shoulder strap if shoulder carry is preferred. For bike transport, attach the Thule InLock universal panel (purchased separately) to a compatible bike rack and secure the attache to the panel following the panel’s instructions to achieve a soft, rattle-free connection. Wipe the exterior with a damp cloth to remove dirt; avoid submerging the case.

What to consider before purchase

• Confirm your laptop dimensions are within the 16" compatibility limit.
• Thule InLock universal panel for bike attachment is sold separately and required for bike mounting.
• IPX4 protection resists splashes and light rain but is not suitable for full immersion.

Usage recommendations

For best results, use the padded compartment for the laptop and store chargers and loose items in separate pockets to avoid pressure points. If you plan to attach the attache to a bicycle, acquire the Thule InLock universal panel and follow the installation steps carefully to ensure a secure, low-noise ride. Regularly inspect sealed zippers and seams for wear if exposed frequently to wet conditions.