Eaglewill 20L Outdoor Backpack for Cycling Hiking Trip Running Sports Daypack Bag *Made of durable and water-resistance fabric, provide strengthen and long-lasting performance *Adjustable padded shoulder/chest straps will fit chest sizes from teenagers up to adults *High-visibility reflective patches and strips to make sure you travel safer in frog days or at night *No muggy and sweat for outdoor cycling with the integrated breathable mesh pad in the back *1 year warranty for product problem.