Longest and More Knots: 105 cm long! This rope toy is bigger, longer, and heavier! Our 6-knot rope toy is designed for large dogs and giant dog breeds, especially aggressive chewers. Much bigger than our competitors and with more knots. Safe and Durable Dog Toys: This 6-knot rope toy is made of washable, multi-colored cotton that is safe for your pet and perfect for tugging, chewing, and shaking. These nearly indestructible dog toys will keep your dog entertained for hours. Toy for Aggressive Chewers: This durable 6-knot rope toy is 6 knots is great for boredom and anxiety, and for bonding with your pet. If your dog is an aggressive chewer, this is the best choice. The toys are nearly indestructible, they are stronger and more durable than the same type of rope toys. Best Chew Toys: This large breed dog rope toy is perfect for tug-of-war. Much more durable dog toy than an antler or dog chew toy. Great for teething puppies. Perfect toys for large breed dogs.