Properties of organosilicon: weather resistance (hydrolysis resistance, UV resistance, salt spray resistance), flame retardant, high abrasion resistance, antifouling, easy to care for, waterproof, skin-friendly, non-irritating, mold-resistant, safety, and environmental protection. Compared to conventional leather and PU, organosilicon-PU has more advantages in terms of hydrolysis resistance, low VOC, odor neutrality, and environmental protection. Organosilicon-PU contains no chemicals or toxic substances, making it safe for the human body and not harmful to our environment. Special feature: There may be creases on the cuffs or collar after use, but if you leave them flat/unattached for about an hour, the crease will disappear automatically. Special features: The organosilicon cuffs provide absolute comfort during play. With 5 holes for a perfect fit. Easy to clean and maintain. Removable double-hook chain. Dimensions: Total length: 35 cm, adjustable length: 22-29 cm.