Material: Nylon + Polyester 4 Colors: Red, Yellow, Black, Blue 5 Sizes: M, L, XL, 2XL, 3XL Features: Durable nylon surface with soft, waterproof padding for comfortable wear Reflective design enhances visibility and safety during nighttime use Neck area features wider padding strips for added softness, breathability, and tear resistance Chest area designed for safety and comfort during use This dog weight pulling harness is a training tool to help improve your dog's behavior and build muscle strength in a safe manner Suitable for both pet dogs and working dogs Package Includes: 1 x Weight Pulling Harness Size Details: M: Neck 11.5–15.5 in (29–40 cm); Chest (Girth) 19.5–27.5 in (50–70 cm); Back 19–22.5 in (48–57 cm) L: Neck 15–19 in (38–48 cm); Chest (Girth) 23.5–31.5 in (60–80 cm); Back 19.5–25 in (50–64 cm) XL: Neck 18–21 in (46–54 cm); Chest (Girth) 27.5–35.5 in (70–90 cm); Back 21.5–26 in (55–66 cm) 2XL: Neck 21–25 in (54–64 cm); Chest (Girth) 31.5–39.5 in (80–100 cm); Back 23.5–28.5 in (60–73 cm) 3XL: Neck 25–29 in (64–74 cm); Chest (Girth) 35.5–43.5 in (90–110 cm); Back 25–30 in (63–76 cm)