Red nylon harness, easy to put on. - Color: Red - Material: Nylon - Size: Large dog - Features: Easy to put on, no training required I bought red, but it was almost pink when it arrived. Since he's a male dog, I bought a different color, so it's almost unused. I think it's good for dogs that pull strongly. I use it for a 31kg Labrador Retriever. The size is adjustable, so I think it can accommodate dogs around 30-40kg. Thank you for looking.