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Our strong nylon dog collar contains a powerful Central Reverse Polarity magnet module and is available in two sizes small and large. Small fits neck measurements up to 45 cm and large fits neck measurement up to 65 cm. The collars are fully adjustable to ensure a comfortable fit. Not to be used as a restraining collar. "In my professional experience animals don't lie and I have seen too many positive results with Bioflow to doubt its beneficial effects" - Roger Meacock, Veterinary Surgeon.
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