Material: Nylon + Polyester 4 Colors: Red, Yellow, Black, Blue 5 Sizes: M to 3XL Features: Durable nylon surface with soft waterproof padding, comfortable to wear Reflective design for increased visibility and safety at night Neck with wider padding strips, soft, breathable, and tear-resistant; chest area designed for safety and comfort This dog weight pulling harness is a training tool to help improve your dog's behavior and build muscle and strength in a proper way without causing harm; suitable for both pet dogs and working dogs Package Includes: 1 x Weight Pulling Harness Size Details: M: Neck 11.515.5" (2940 cm); Chest (Girth) 19.527.5" (5070 cm); Back 1922.5" (4857 cm) L: Neck 1519" (3848 cm); Chest (Girth) 23.531.5" (6080 cm); Back 19.525" (5064 cm) XL: Neck 1821" (4654 cm); Chest (Girth) 27.535.5" (7090 cm); Back 21.526" (5566 cm) 2XL: Neck 2125" (5464 cm); Chest (Girth) 31.539.5" (80100 cm); Back 23.528.5" (6073 cm) 3XL: Neck 2529" (6474 cm); Chest (Girth) 35.543.5" (90110 cm); Back 2530" (6376 cm)