Easily fitted..fit around the Dogs neck and buckle up leaving a 2 finger gap so no choke and trim off excess one size fits all…fit around neck with 2 fingers inbetween and trim off excessk grey colourur Lasts up to 8 months, thats 21p per week (years ago they only had flea collars our dog Tyson never had fleas in 16 years Stored in a Metal tin to add longevity to the product so you can keep some in storagde
