4-pack, Protects From Biting Insects, Adjustable Fits Both Dogs&cats, Built-in Plant Based Formula, Slow Release Lasting Protection, Waterproof

Naturally Effective Plant-Based Formula: Using plant based insecticidal compounds as active ingredients, without containing either DEET or Pyrethroids, protects dogs and cats from annoying or sometimes dangerous biting insects naturally, safelyand effectively.Built-in Lasting Protection: Collar is made with non-allergic soft thermoplastic rubber. The natural active ingredients are built into the collar material during the polymer melt and slowly release during wearing, therefore providing the most enduringprotection for cats and dogs 24/7 non-stop.Flexible & Adjustable to Fit All Pets: flea collar is made to suit all pets. With the adjustable collar length 25.59 inches/65 cm, it can be used on both dogs and cats of all ages and sizes, from a 3 month old kitten to a full-size Mastiff. All youneed to do is to buckle up and remove the extra length.Easy and Comfortable to Wear: Buckle the collar around your pets neck, make sure there is enough room for at least two fingers and then remove the extra length. The flea collar is so light that your pets will not feel any weight when wearing it.