Laptop bags (like this "Butterfly Style" bag) fold out to provide an unobstructed view of the laptop during X-ray screening.
In August 2008, the Transportation Security Administration created new "checkpoint-friendly" standards for laptop cases. If a laptop bag meets these standards, a passenger can leave a laptop inside the bag during screening. The TSA has approved three basic bag designs that offer an unobstructed view during X-ray screenings. Having one of these bags is not a guarantee. TSA screeners can demand a separate screening of any laptop.
Butterfly Style
This butterfly style of laptop bag has two compartments that fold out like a book. According to TSA regulations, a laptop can only remain in its case if it is in a laptop-only compartment that lies flat on the conveyor belt. Accessories cannot be placed on top of or underneath the laptop during screening. With this style, such accessories as batteries and power cords are placed in one compartment and the laptop is placed in the other. When the case is folded open, the accessories do not obstruct the view of the laptop during X-ray.
Trifold Style
The trifold style has three compartments and folds out like a trifold wallet. When folded, this style often looks like a messenger bag. To comply with TSA regulations, the laptop must be by itself in its own compartment and must lie flat. When unfolded, no buckles, zippers or straps can be on top of or underneath the laptop.
Sleeve Style
The sleeve style is the simplest and often the least expensive TSA-approved design. A sleeve has only one compartment, usually without a handle or shoulder strap, that zips shut. Because it has only a single compartment, power cords and other accessories must be placed in a separate bag.
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