Ultra-Lightweight & Foldable Design WEST BIKING bicycle backpack weighs only 280g, foldable for easy storage. Effortless to carry during long rides, no extra burden on your back. 2L Hydration Bladder Compatible Designed to fit 2L hydration bladder (sold separately or as a set). Dual side outlets for easy water access, free your hands while cycling. Water-Repellent PU Coating Made of polyester with PU water-repellent coating, resists light rain and splashes. Keeps your gear dry in daily outdoor activities, not recommended for heavy rain. Reflective Strips for Night Safety Built-in reflective strips enhance visibility in low light. Improves safety for night cycling and outdoor adventures. Breathable & Ergonomic Comfort Breathable sponge back panel reduces pressure, adjustable straps fit all body types. Comfortable to wear for hiking, running, and camping. 10L Cycling Backpack Information 2L Water Bladder Information Bicycle Backpack;Cycling Backpack;2L Hydration Bladder Compatible Bag;Lightweight Cycling Bag;Water-Repellent Bike Backpack;Outdoor Cycling Backpack;Reflective Cycling Bag;Foldable Bicycle Bag;Hiking Backpack;Running Backpack;Camping Backpack;Bike Accessories;Lightweight Bike Bag;Water-Repellent Cycling Backpack;2L Hydration Cycling Bag;Reflective Bike Backpack;Foldable Cycling Backpack;Outdoor Sports Backpack;Bike Gear Bag;Leisure Cycling Backpack