【Multifunctional Dog Head Cover】Uses include: Anti-anxiety aid for stress in the home, car, and at the Vets; dog ear muffs for noise cancelling to protect dogs’ ears and hearing from loud noise, such as Thunder, Fireworks, vacuums, and gun fire; aerate the ears; heal or prevent hematomas; neck and ear warmers; grooming aid; keeping long ear and facial hair up and out of the way while eating or drinking. 【How to Reduce Noise】 It is important to place the ears down over the ear canals so the ear canals are not exposed, then secure them in place with HEYWEAN dog ear muffs. Noise reduction is achieved by no shake ear wraps for dogs’ gentle compression closing off the ear canal. If you think it's too tight, please know snugness is necessary. If your 4 fingers fit under it, it's not too tight. Pets appreciate it most when used only during a stressful situation. 【Designed for Groomer & Vet】 As a grooming tool, dog headgear can calm dogs and protect them from the noise and high pressure air associated with strong drying, save grooming salon time such as toenail clipping, nail clipping, brushing teeth, bathing, etc., and create a safer environment by calming restless, unpleasant, aggressive, or sensitive dogs. It can also help pets control bleeding or prevent medication from coming off their ears after surgery. Good for ear wound recovery.