Research shows that regular exercise, outdoor play are good way to keep your dog active, satisfied and well behaved. Then a suitable harness is essential When it comes to a harness, you need it to be the most comfortable one you can find. This item is what you are looking for. Features - Color: Olive Green. - Material: Nylon. - Size S: 32-48cm(Neck Circumference); 38-52cm(Chest Circumference); 0.115kg(Harness Weight); 30kg(Bearable Tension); 4-7.5kg(Dog Weight). - Size M: 40-60cm(Neck Circumference); 48-64cm(Chest Circumference); 0.165kg(Harness Weight); 102kg(Bearable Tension); 7.5-17.5kg(Dog Weight). - Size L: 48-70cm(Neck Circumference); 64-75cm(Chest Circumference); 0.225kg(Harness Weight); 192kg(Bearable Tension); 17.5-22.5kg(Dog Weight). - Size XL: 60-80cm(Neck Circumference); 72-102cm(Chest Circumference); 0.25kg(Harness Weight); 246kg(Bearable Tension); 22.5-45kg(Dog Weight). - STRAP ADJUSTMENT - Push then pull straps through buckle for a custom fitting. Leash attachment point: aluminium alloy D-ring on dog's back. - SAFETY FEATURES - Nylon webbing with reflective material for good visibility at night. - STYLISH AND DURABLE - Lightweight buckle with large loading capacity greatly improves tensile strength. - Warm Tip: Dear buyer, due to lighting effect, monitor's brightness, manual measurement, etc., there could be some slight differences in the color and size between the photo and the actual item. Sincerely hope that you can understand