Happy Hoodie - a soft, expandable fabric band that makes force drying (and grooming) less stressful for pets. Happy Hoodie is the FORCE DRYING MIRACLE Hoodie for pets that groomers have come to love! CALMS, COMFORTS & PROTECTS PETS. The gentle compression reduces noise and has a swaddling effect that can relieve a dog of anxiety, stress, fear and aggression. SIZE GUIDE. Please refer to listing photos for measuring instructions and size guide. A snug fit is often more helpful when a pet is very upset (such as force drying and fireworks). This is a large; unopened.