Practical notes
The Short fills unused space inside packed shoes with socks, keeping small soft items together and helping flexible footwear retain its shape.
Use only clean, dry socks and place them in a small pouch before inserting them into worn shoes; do not overfill delicate footwear.
Cover each pair so the soles do not touch clothing, place heavier shoes near the suitcase wheels, and pack only pairs needed by the itinerary.