PatentoPet offers a collar that is highly resistant, with double stitched nylon, that incorporates a very short leash with a spring effect. This goes well with large breed dogs and should be used for dogs to keep them at our side. In situations where you should wait, or have to exercise control over them, you will see this product its effectiveness. Be beware ofcourse, since this can result in situations where your pet will use a lot of strenght at one quick moment. Possibility to choose out of three colours.