1.LIGHTWEIGHT COMPACT UNDERSEAT STORAGE FOR CYCLING Designed for cyclists who need a streamlined storage solution. This cycle seat bag plenty of room for tools, snacks and small accessories without adding weight, making it an ideal company for mountain bikes, road and touring adventures. 2.600D polyester TPU construction for weather resistance: Made of high quality and waterproof materials, this bag provides excellent durability against dirt, slime and light direction that keeps your items and dry, including mountain bikes and long distance folds. 3.SECURE ATTACHMENT SYSTEM WITH ADJUSTABLE STRAPS FOR STABILITY With strong hooks and loops, this seat bag easily attaches to most saddles, preventing unwanted movement during bumpy folds while riding and the snout keeps the bag in place when riding the terrain or high speed bike. 4.Reflective accents for increased visibility in low light conditions: Equipped with reflective strips, this storage bag increases the visibility of riders at night or in foggy weather, additional layer by cyclists, which is suitable for motorcycles and other riders on the road during early morning or mild night riding.