Features: Dog Collar for Summer: Our pet dog collar use breathable and cooling material, eco-friendly gel-liner, let you walk your dogs outside no-worry of your pet dogs getting sunstroke, great summer outdoor walking cooling collar for dogs. Pet Cooling Scarf: Our dog cooling scarf with simple design, breathable material, cooling technology, skin friendly, great for pet dogs summer wear, technological design to take away body heat, fashion and easy to wear for your pet. Long Durable Cooling Performances: Our dog cooling collar could absorb pet sweat quickly and shift rapidly the perspiration to the fabric-surface evaporation falls, take away body heat and keep cooling for long-time with durable performances. Easy to Wear: Designed with hook and loop-fasteners which is easy to wear, carry with lightweight & breathable material, prevent your pet dog or cat feeling discomfort, 3 optional size to choose, no-limits for pet size Selected Material: Our dog cooling collar use soft skin friendly polyester,nontoxic, breathable and wear resistant, friendly for dogs and satisfied pet summer outdoor walking requirements. Specifications: Material: Polyester Size Chart: Small/Medium/Large Size:S Hood Diameter:9.5cm(3.74inch) Width:9.3cm(3.66inch) Size:M Hood Diameter:13.5cm(5.31inch) Width:11.5cm(4.53inch) Size:L Hood Diameter:20cm(7.87inch) Width:13cm(5.12inch) Package Includes: 1 x Dog Cooling Collar note: Please allow 1-2cm errors due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item.