Enjoy more fun in the sun with the fouFIT Cooling Dog Collar! This cotton collar is filled with non-toxic polymer beads that absorb moisture and mimic the cooling effects of sweating. Help protect your pooch from heat stress by simply soaking the collar in water and gently wrapping it around her. Fastens with velcro for a custom, comfortable fit. No refrigeration or freezing required! Cooling action lasts up to 3 days, perfect for vacations or weekend trips. Mimics sweating and cools through evaporation. Made with 100% non-toxic materials for safe extended wear. Easy preparation—simply soak in water to start cooling. Protect your furry family member from overheating on long walks and sunny days. Available in blue, red and grey. Size Dimensions SMALL 10"(25.5cm)-12"(30.5cm) MEDIUM 12"(30cm)-15"(38cm) LARGE 15"(38cm)-18"(45.5cm)