☆For those wishing to purchase multiple items, please leave a comment☆ Instant purchase is welcome Suitcase Carry-on S size with expansion function, brake caster, TSA lock equipped, 40L, carry case, business trip, travel, 1-3 nights Color: Black Size: S size / Carry-on / 1-3 nights / 40L (55.5*36.5*23cm) [Expansion function assuming flights & 3-stage adjustable caliber] Assuming in-flight movement, business trips, and travel scenes, an expansion structure with a zipper opening and closing is adopted. By expanding the gusset width by about 5cm, the capacity is increased by about 20%, so you can rest assured even if your luggage or souvenirs increase during your trip. The lightweight and durable aluminum alloy caliber can be adjusted in 3 stages with a one-push operation according to your height and usage scene. [Dry and wet separation storage, hanging storage, dust cover included] Equipped with a dry and wet separation bag that can store wet and dry items separately. Inside, there are also convenient pockets for temporarily storing small items, smartphones, documents, tickets, etc. A dust cover with dustproof specifications is included, which can be folded and stored when not in use. [Removable, double caster with brakes] Durable double casters are used, and 360-degree smooth rotation enables comfortable running. The design suppresses vibration and noise during running, and stable movement is possible even on uneven road surfaces. With the brake function, you can rest assured even on trains or slopes. The casters are removable, making cleaning, storage, and replacement easy. [Highly durable hard body & YKK zipper] A hard-type body that combines ABS resin and PC (polycarbonate) resin is used, achieving both lightness and impact resistance. A reliable YKK zipper is used for the main zipper, realizing a long-term stable usability.