Our dogs LOVE their Boots and Barkley Invincible Chains! Boots and Barkley is a brand name of pet supplies that is carried by Target.
The Boots and Barkley Invincible Chains are made of a very durable material. My two dogs have a knack for destroying all of their toys (in short order, I might add!) except for this toy and the toys made by the Kong brand (which can be pricey). This toy is still completely intact after about six months of fun. The dogs seem to have the most fun with it when they each grab a link and play something like tug-of-war.
The Boots and Barkley Invincible Chains are also easy to clean with a quick spray from the garden hose. The links on the one that we purchased (see photos) are yellow and black although I did see the toy in a couple of other color combinations.
Since this toy has been so durable, I will purchase more dog toys made by Target's Boots and Barkley brand. It's not often that we find dog toys that hold up so well!