ROCKBROS is an original brand founded by cycling enthusiasts. The goal of ROCKBROS is to offer high - quality products at an affordable price to every customer who loves cycling and outdoor sports. ROCKBROS Bicycle Waterproof Frame Bag with Double Zippers Features Waterproof: Keeps your items dry in various conditions. Easy Installation: Can be quickly set up on the bike. Two Sizes Available: Allows you to choose the most suitable one for your needs. Durable and Wear - Resistant: Built to last through regular use. Please note: The waterproof, leak - proof zipper is a bit difficult to open. Specifications Brand: ROCKBROS Series: AS - 021 Material: 840D Nylon + TPU Color: Black Sizes: 1 L/1.6 L (approx. 21.55.58.5cm / 23.56.510.5cm) Weight: approx. 90g/125g PP Stiffener: There is a PP stiffener inside the bag to prevent it from being easily deformed, ensuring the bag's durability. Easy Installation: With an adjustable Velcro closure, you can quickly attach and remove the bag from different bike frames. Side Pocket Design: The side pocket enables you to easily store mini - bike pumps, repair tools, and other small items. Washing Instructions Cold Water Wash: Wash at 30 degrees Celsius. Clean with a Damp Cloth: Gently wipe the bag for cleaning. Avoid Brushing and Bleaching: Do not use brushes or bleach on the bag.