<p>Our magnetic dog collar contains a powerful Central Reverse Polarity magnet and the canvas finish is designed to be both comfortable and durable for your pet.<br></p> <p>Available in two sizes, small and large.&nbsp;The small is 16mm wide and the large is 20mm wide.</p> Small fits neck circumference up to 45cm Large&nbsp;fits neck circumference up to 65cm <p>If required the collar can be trimmed and heat-sealed with a naked flame to prevent fraying.<br></p> <p>These collars can be worn by microchipped dogs.</p> <p>Our canvas dog collars&nbsp;are water resistant and will withstand being out in the rain. They are not suitable for any kind of prolonged water exposure or submersion (e.g. showering, bathing or swimming).</p> <p>Please note:&nbsp;We advise that you do not allow the collar to come into contact with any flea treatment chemicals. We recommend removing the collar while the treatment is in progress and leave it off until the fur is completely dry.&nbsp;</p>