Thank you for looking! (^^) * New, unused * Free shipping * No comments needed, immediate purchase OK [Please refrain from price negotiations] Expandable capacity just by opening the zipper on the bottom! This is an expandable, large-capacity Boston bag that is safe even when you have more luggage. It is versatile and useful for travel, business trips, fitness gyms, club activities, camps, and outdoor activities. It is also a versatile design that is easy to use as a mother's bag for childcare. The simple and calm black color makes it suitable for all ages and genders. The zippered pocket on the back can be threaded through the handle of a suitcase. Carry-on compatible specification. It can be carried without stress during travel. It can be folded and stored compactly when not in use. It is also convenient as a sub-bag. [Color] Black [Size] <Before expansion> Height: approx. 30cm / Width: approx. 39cm / Depth: approx. 22cm <After expansion> Height: approx. 19cm / Width: approx. 37cm / Depth: approx. 19.5cm <When folded> Length: approx. 18cm / Width: approx. 27cm / Thickness: approx. 4cm *There may be some errors. [Pocket specifications] <Inside main compartment> ・ Open pocket x 2 ・ Zipper pocket x 1 <Back> ・ Zipper pocket x 1 Boston bag, large capacity, expandable bag, foldable, Boston, travel bag, travel bag, carry-on bag, gym bag, sports bag, mother's bag, black, unisex, business trip, camp, club activities, school trip, sub-bag