Bike Pannier Bag Waterproof Bicycle Saddle Rear Rack Panniers With Bike Tail Light Insulated Trunk Cooler Reflective Strap Shoulder Strap And WaterLarge Capacity- Our bike trunk bag provides your items with ample storage space it can hold casual essentials, books, tablet, clothes, or cycling tools and accessories, such as phone, wallet, gloves, glasses, mini pump, tire repair kit, spar, hot or cold drink and so on.Water Resistant Material- The surface of bike rack bag is made of water-resistant and mud repellent polyester, it's lightweight but also solid and sturdy, the heat retaining inner keeps your cold drink or food warm for hours.Safety Stability- Large reflective elements can increase visibility in low light or in dark, so you can ride safer. Open-top rear pocket with elastic cord keeps your water bottle in place.Easy to Install- Bottom adjustable straps makes bike rack bag easy to install the bag on your bike rear position, stable and universal, no complex process. The silicone strap are designed to fit around many size bikes and our bike rack bag to keep lights secure and firm.Product Size:38*15.5*18cmProduct Quantity: 1 PieceProduct color: black