Featuresr 18l cycling backpack made of ultralight water resistant and tear resistant nylon fabricr special hole design for water bag not includedr adjustable shoulder strap chest strap and waist strap to fit your needr mesh and poriferous eva design on the back for maximum breathability and comfortr reflective strips for safe riding at nightr mesh cover to hold your helmetr rain cover to be used in heavy rainr detachable pouch for store your cellphoner suitable for outdoor activitie