Prevendog 1,304 g collar for dogs 25 kg and up 2 pcsAntiparasitic collar for large dogs, effectiveness: ticks and mosquitoes, waterproof, collar size 75cm. This is a veterinary medicinal product. The goods are only for end consumers and cannot be resold. The Prevendog collar is intended for adult dogs from the age of seven months, acting against ticks, mosquitoes, phlebotons and parasites sensitive to deltamethrin, with an action of up to 6 months. The medicated antiparasitic collar Prevendog size L XL