•【Large 5.8L Capacity】Ample space for all your daily essentials, making it perfect for long-distance cycling trips and everyday use. •【Expandable Design】Adjustable capacity allows you to customize the bag size according to your needs, providing versatility for various load sizes. •【Secure Triangular Fixation】Features a stable three-point attachment system with strong magic tape straps, ensuring the bag stays firmly in place during rides. •【Reinforced Structure】Incorporates a PP board support to maintain shape, prevent sagging, and protect your belongings from compression. •【Water-Resistant Material】Constructed with water-resistant fabric to keep your items dry in light rain or splashes. •【Easy Installation】Designed for quick and convenient attachment to your bicycle, making it hassle-free to use on any ride. Specifications: •Material: Polyester + Nylon •Size: 44x25x9.5cm •Weight: 254g •Capacity: 5.8L Package included: •1 x Tail Bag