Used about 3 times. No box. Dog carrier bag featuring a transparent window and ventilation holes. - Brand: GEX - Model Name: OSOTO Carry Traveler Tall Black - Color: Black Made of impact-resistant and lightweight polycarbonate. Compact size, easy to carry on trains for very small dogs and cats. 4-WAY backpack type. PC (polycarbonate) made to protect your precious pet. Also for cats' outings! Multi-functional with 4 styles: backpack, front carry, hand-held, and can be attached to a suitcase or OSOTO roller. Compact size that can be brought onto trains: Total height, width, and depth is 90cm. Enjoy outings far away together! *Please check the carry-on conditions of each transportation company as they vary. Large transparent window for eye contact while carrying: You can always see each other. You can attach a cover to hide it when you want! Large front door that opens wide: Opens and closes quickly. Shoulder strap can be stored: The strap won't get in the way when carrying by hand or attaching to a suitcase. Full-open door: Full-open design for smooth pet entry and exit. Inner pocket: You can put a cold pack or warmer in the large inner pocket to adjust the temperature. Features include mesh ventilation, lockable zippers (keys sold separately), legs for stability when placed on a suitcase, and a jump-out prevention lead (1). It's packed with pet-friendly features.