Material: Nylon + Polyester Available in 4 colors: Red, Yellow, Black, Blue Available in 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 Wider padding on the neck and chest areas provides comfort, breathability, and tear resistance Designed to support safe and effective strength training for dogs Suitable for both pet dogs and working dogs Package Includes: 1 x Weight Pulling Harness Size Details: M: Neck 11.5–15.5" (29–40 cm); Chest (Girth) 19.5–27.5" (50–70 cm); Back 19–22.5" (48–57 cm) L: Neck 15–19" (38–48 cm); Chest (Girth) 23.5–31.5" (60–80 cm); Back 19.5–25" (50–64 cm) XL: Neck 18–21" (46–54 cm); Chest (Girth) 27.5–35.5" (70–90 cm); Back 21.5–26" (55–66 cm) 2XL: Neck 21–25" (54–64 cm); Chest (Girth) 31.5–39.5" (80–100 cm); Back 23.5–28.5" (60–73 cm) 3XL: Neck 25–29" (64–74 cm); Chest (Girth) 35.5–43.5" (90–110 cm); Back 25–30" (63–76 cm)