Description
This Bike Trunk Bag is composed of non-woven fabric and waterproof zippers, making it wear- and dirt-resistant while cycling. It also features a revolutionary design with built-in aluminum foil insulation, allowing you to store hot and cold drinks for up to 5 hours.

Features
Large Capacity: This bicycle trunk bag has plenty of room for storing your bike tools, a change of clothes, and a few other necessities.
Before expansion: 10L
After expansion: 35L
Humanized Design: The main compartment is padded all around to make your belongings well-protected.
Easy to Install: With velcro quick release design, can be easily and securely mounted on all types of bikes.
Security Protection: Reflective strips on both side panniers to ensure your safety in the dark.
Fully Waterproof: Made of 1000D polyester material, this bike pannier is super durable and fully waterproof, as well as anti-tear, wear-resistant, and heat-resisting, protecting your items perfectly.