Features: 1. Large capacity design with 6 pockets to hold 6 bottles with a diameter of less than 8cm/3.15inch. 2. Strong 600D polyester materials and PVC waterproof cloth for durable use. 3. A portable design on the top for handy carrying and easy taking out bottles. 4. Built-in aluminum foil for long-lasting heat preservation and cold preservation. 5. A quick-release fixing strap design for fast and steady installation. Specifications: Product Name: Pannier Bags for Bicycles Rear Rack Material: 600D polyester /PVC waterproof cloth Size: about 25*8*21cm/9.84*3.15*8.27inch Weight: about 460g Color: Black / Blue Orange Capacity: about 2L Functions: 6 insulation and refrigeration pockets Packing List: 1* Bike Panniers Notes: 1. Due to the lighting effects and shooting angles there is a color difference in the product please understand.2. Due to manual measurement there is a tolerance in the product size.