Product Details: Brand: ROCKBROS Material: Outer Material: High-Density Polyethylene (HDPE) Inner Material: Polyester Weight: approx. 33 g Volume: approx. 0.2 L Color: Black-Green Product Description: Durable HDPE Material: The top tube bag is made of HDPE, which is water-resistant and tear-resistant. Note: Seams and zippers are not waterproof; please avoid prolonged rain or submersion. The material is scratch-resistant and easy to care for – dirt can be easily wiped off with a damp cloth. Spacious Storage Capacity: 0.2 L capacity (13.5 cm × 6.5 cm × 7 cm). Despite its compact size, the bag offers space for multitools, keys, energy gels, a taillight, and a helmet lock – ideal for road cyclists and daily use. 33 g Ultra-Lightweight, Aerodynamic Design: Extremely lightweight, adding no extra bulk. The aerodynamic shape reduces air resistance and ensures efficient riding. Tool-Free Quick Installation: Easy attachment with hook-and-loop and buckle fasteners, completely tool-free. The bag sits securely under the saddle – even on uneven or bumpy roads. Versatile and Minimalist: Universally suitable for city rides, sports tours, and leisure. Also compatible with folding bikes. Sleek, modern design that adapts to any bicycle style – lightweight, practical, and ready to use anytime.