ThunderShirt® is the original, vet recommended, natural calming solution that may reduce anxiety in dogs in a drug-free way. Like swaddling an infant, our dog anxiety vest's patented design applies gentle, constant pressure to calm all types of anxiety, fear, and over-excitement issues in dogs. The ThunderShirt® is recommended for thunder, fireworks, separation anxiety, travel, & vet visits. Treat anxiety, fear, and over-excitement in style! You’ll love the ThunderShirt®’s calming effect on your dog. Size of item: Dog medium (26-40 lbs) -- Modeled here on Ollie, my 42 lb dog. Flat lay measurements: Neck to end length: 15.5" , Width: 20-27.5" Condition: Near excellent preowned condition. This has been worn. The logo on the side is starting to peel off just a bit. Does not affect use of the product. Please see all photos for exact item condition. Ships from a smoke free home. Keywords: dog, pet, dog mom, anxiety, thunder, fireworks, separation anxiety, canine, training, clothing, neutral, utility