A drug-free, easy to use garment that helps with travel anxiety, problem barking, hyperactivity and many other behavior problems. Thundershirt's gentle, constant pressure has a dramatic calming effect for most dogs. Pressure has been shown to have a calming effect on the nervous system. To learn more about this product, visit the Thundershirt website at www.thundershirt.com.

Sizes: XXS=Dogs under 12 lbs, XS=Dogs 10-18 lbs, S=Dogs 15-25 lbs, M=Dogs 20-50 lbs, L=Dogs 40-70 lbs, XL=Dogs 60-100 lbs, XXL=Dogs over 90 lbs.