Thundershirt Sport XXL

Overview

The ThunderShirt Sport is the #1 vet-recommended calming vest for dogs, designed to reduce anxiety, fear, and over-excitement in a drug-free way. Its patented design applies gentle, constant pressure — like swaddling an infant — to help calm dogs during stressful situations. The Sport edition features a breathable, lightweight fabric with contrasting trim and reflective logos for safer nighttime walks. This is the XXL size for the largest dogs.

Key Features & Benefits

• Patented pressure wrap design applies gentle, constant pressure to calm anxiety
• Veterinarian recommended and already used by millions of dogs
• Over 80% effective at reducing anxiety
• Drug-free — no medications, no side effects
• Breathable, lightweight fabric for all-day comfort
• Reflective logos for visibility during nighttime walks
• Washable and durable construction
• No training required — easy to put on in 3 simple steps
• Recommended for thunder, fireworks, separation anxiety, travel, vet visits, and unwanted barking

How to Use

Place the ThunderShirt over your dog's back and secure using the adjustable fasteners. Ensure a snug, comfortable fit around the torso. Use before or during anxiety-triggering events for best results.

Size

XXL — fits dogs over 110 lbs, chest size 38"–50"