This pannier is top quality from material to features to well made. Material is like a soft rubber type of material providing strength and water protection. It has both a locking latch mechanism and a strap for attaching to the rack safely, yet easy to remove. It has small pockets inside and out. The back pack straps are stored in a convenient manner and well made and comfortable. The pack is maximal size possible to be place on a back rack, allowing for enough storage for clothes, food, etc. I am very happy with it and think you will be too!