Attaching your Bow Tie is simple. There's a strip of velcro at the back of each bow tie which winds around your canine's collar. The outside of the velcro strip is velvety soft and lies against your pup's skin without causing any irritation. The velcro comes as a standard length to roll around the collar, but if you find this is too long, simply cut the velcro to fit. MAKE SURE you trim the velcro from each side evenly, otherwise the bow tie won't sit properly.