What makes these dog walking bags extra special as well as being super practical is that we've designed the bag strap to double up as an emergency dog lead should one of those heroic 'save a stray or lost dog' moments present itself. These bags have 3 compartments for all the essentials including a zip pocket for phone, keys, bank card safety. The main pocket is deceptively spacious and easily fits a thermos cup, perfect for those early up and out days. It really is practically perfect!