This is a "4-piece compression travel pouch set for travel, compression bags, black, bag, compression pouch, zipper, business trip, travel, and convenient goods." [Easy Compression with Zipper] This bag compresses clothing by folding and storing them, then closing the zipper to reduce thickness. [High-Quality Material] Made of water and dirt-resistant, abrasion-resistant polyester fabric. The contents are not visible, so you won't be flustered when opening your carry-on case unexpectedly. [Compress and Carry] Recommended for travel, business trips, and camping where you want to minimize luggage. When not in use, it can be folded and compactly stored in the M-size bag. [Sizes] S: Approximately 25cm x 18cm x 8cm M: Approximately 30cm x 21cm x 10cm L: Approximately 36cm x 25cm x 10cm LL: Approximately 41cm x 30cm x 10cm