LARGE CAPACITY & HUMANIZED DESIGN: This bike trunk bag comes with one main compartment, two extensible side pockets and one water bottle pocket in the back. What's more, the main compartment is padded all around to make your belongings well protected. The water bottle pocket in the back with adjustable drawstring design is helpful for avoiding the water bottle falling out on a bumpy ride.

MULTIFUNCTIONAL DESIGN: Delicate bike bags come with 1 adjustable shoulder strap can use as a messenger bag, and can be carried by the top handle allowing you to use it. Made of high quality polyester material, so this bike pannier is super durable. We also provide with an aluminum film thermal insulation bag, allowing you to store hot and cold drinks for up to 5 hours. Perfect for outdoor hiking, picnic with friends.

WATERPROOF: This Bike Trunk Bag is composed of high quality polyester material, a professional waterproof cover and waterproof zippers, making it wearresistant, dirtresistant and higher waterproof performance while cycling. Fold-out Pockets are designed on both sides, durable and easy to scrub, wear and tear-resistant. Equipped with water resistance pressed double rubber zipper to prevent rainwater infiltration, smooth and durable.

DOUBLE SECURITY PROTECTION: There is a mounting strap on the water bottle pocket, which allows attaching bike rear light for a safe ride. Reflective strips on both sides of this bike rack bag increasing your visibility in dark or low light conditions.

EASY TO INSTALL: Secure this bicycle bag on the bicycle rack by fixing straps and Velcro. It can be easily and security mount on all types of bikes, can also release quickly. There is a mesh bag and a bungee cord on the top of rack bag which can be easily put in or take out your items like a rain jacket, gloves, umbrella, repair items, tripod etc.