On offer for your extra-small dog (Cairn Terrier/Mini Dachshund/Border Terrier size) is this grey ThunderShirt. The Classic ThunderShirt is the original natural calming solution. Like swaddling an infant, ThunderShirt's patented design applies gentle, constant pressure to calm all types of anxiety, fear, and over-excitement issues. Great for thunderstorms, fireworks, separation anxiety, travel, vet visits, problem barking, reactivity, and other stressful situations. For dogs 8-12 lbs. Chest circumference 13” to 17”.