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✔PORTABLE TRIANGLE BAG: Bike triangle bag only 0.35lb, total 1.2L space for daily use. Our designer has try many size standard for this bag to get the largest space and the best adaptability. This large and durable bike storage bag is designed for road, mountain and commute bikes.
✔DURABLE 3 LAYERS SHELL: ROCKBROS bike bag is made of the most durable shell. The outside layer is PU+Polyester, the middle layer is 5mm foam, the inner layer is polyester cloth. Durable material is very suitable for bicycle commuter, travel and daily storage.
✔LARGE STORAGE: Big enough to hold all of your tools and necessary things, small enough to sit under the frame of your bike. Spacious storage pocket to hold your phone, earphones and money clip, while the other big mesh pocket fits your keys, nutrition, and more.

ULTIMATE WATER RESISTANCE: Crafted from rugged 840D nylon with advanced seamless heat-press technology, this frame bag achieves 95% water resistance to shield your gear from rain, splatters, and road spray. Spacious enough to store spare clothes, repair tools, energy bars, and essential cycling accessories—ride confidently even in downpours without worrying about wet valuables.
DURABLE STRUCTURE & SMART ORGANIZATION: Reinforced with a rigid bottle plate, the bag maintains its shape and stays securely in place, preventing deformation and protecting contents from squeezing. Dual-side compartment design allows easy access to small items like keys, phone, or tire levers while riding, keeping your essentials organized and within reach.
ERGONOMIC DESIGN FOR COMFORT & SAFETY: Slim 6mm profile eliminates leg rub during pedaling, ensuring a smooth ride. Double-sided reflective logos enhance visibility during low-light conditions, providing critical nighttime safety by alerting motorists—ride with peace of mind day or night.