55 x 40 x 20 cm
Cabin
Best for two to four days, light packing, and overhead movement. Airline limits vary, so confirm the active route before departure.
EVALITSA
Size / fit / route
A practical sizing system for luggage, backpacks, optics, and accessories, built around how modern travel actually moves.
Scale system
Choose by route, not category.
65-80 cm
Checked
Best for extended stays, layered climates, and trips where structured volume matters more than terminal speed.
12-18L
Daily carry
Clean city movement: laptop, water, jacket, optics, documents, and compact personal items.
18-35L
Travel pack
Commute-to-terminal capacity for tech, layers, a wash kit, and one disciplined change of clothes.
Route matrix
Pack for the day you are entering.
City day
12-18L backpack
Laptop, optics, shell layer, charger, documents
Cabin route
55 cm case + slim backpack
Two to four outfits, wash kit, tech, in-flight layer
Long weekend
30-45L duffle or travel pack
Flexible soft volume for shoes, layers, and overflow
Extended stay
65-80 cm checked case
Structured packing, heavier garments, gifts, and return space
Optics fit
Frame meets light.
Lens width
Wider lenses increase coverage and reduce peripheral glare on bright routes.
Bridge
The bridge should sit stable without pinching or sliding when walking.
Temple length
Arms should hold comfortably behind the ear without pressure points.
Coverage
Wrap and shield shapes suit speed, driving, sea light, and open pavement.
Pre-flight check
Before the object leaves the room.
01
Check the active airline cabin dimensions before flying.
02
Leave 15 percent free capacity for return movement.
03
Use soft goods when the route includes stairs, trains, or short transfers.
04
Choose hard luggage when shape, protection, and stacking matter.
05
Match optics to light conditions, not only the outfit.