Thunder Jacket
Details
Loud noises and unfamiliar situations can send even the calmest dog into a spiral of pacing, panting, and hiding. The Thunder Jacket uses gentle, continuous pressure across the torso — the same calming principle behind swaddling and weighted blankets — to help anxious dogs settle during thunderstorms, fireworks, vet visits, and travel.
- Applies gentle, continuous compression to ease anxiety
- Helps calm dogs during thunderstorms, fireworks, and travel
- Soft, breathable fabric your dog can wear for hours
Based on general canine calming-wrap principles and customer-reported outcomes.
Usage
Introduce the jacket before a stressful event when possible, letting your dog wear it calmly for a few minutes at a time so they associate it with a relaxed, positive experience. Fasten the straps snugly but not tight — you should be able to slide two fingers underneath comfortably. It can be worn during storms, fireworks, car rides, vet visits, or any situation that triggers anxious behavior.
Materials & Care
Soft, breathable polyester fabric with an adjustable strap closure for a snug, secure fit. Hand wash or machine wash cold on a gentle cycle, then air dry — avoid high heat, which can damage the fabric and elastic.
What to Expect
Many dogs relax within 15–30 minutes of putting the jacket on, though every dog responds differently. For dogs with severe anxiety, use alongside your vet's broader treatment plan rather than as a standalone fix.
Sizing Guide
Measure your dog's neck and chest before ordering. Between sizes? Size up for a looser, more relaxed fit, or size down for a snugger, swaddle-like fit.
| Size | Neck Girth | Chest Girth | Typical Weight |
|---|---|---|---|
| XS | 10–12 in (25–30 cm) | 14–17 in (35–43 cm) | 5–9 lbs |
| S | 12–14 in (30–35 cm) | 17–20 in (43–51 cm) | 9–15 lbs |
| M | 14–16 in (35–40 cm) | 20–23 in (51–58 cm) | 15–25 lbs |
| L | 16–18 in (40–45 cm) | 23–28 in (58–71 cm) | 25–40 lbs |
| XL | 18–20 in (45–50 cm) | 28–32 in (71–81 cm) | 40–60 lbs |
| XXL | 20–23 in (50–58 cm) | 32–36 in (81–91 cm) | 60–90 lbs |
| XXXL | 23–26 in (58–66 cm) | 36–42 in (91–107 cm) | 90–120 lbs |
- Neck: around the base of the neck, where a collar normally sits.
- Chest: around the widest part of the ribcage, just behind the front legs.
Still not sure? Contact us with your dog's measurements and we'll help you pick a size.
Care
- Spot clean with a damp cloth and mild soap; air dry away from direct heat.
- Machine-washable components should be washed cold, on a gentle cycle.
- Wipe down hard surfaces regularly to remove fur, dirt, and drool.
- Inspect straps, stitching, and hardware periodically for wear.
Shipping + Returns
Most in-stock items ship within 8–12 business days.
Not the right fit? Unused items in original packaging may be returned within 30 days of delivery. See our Shipping & Delivery page for full details.
Calm Starts With Gentle Pressure.
The Thunder Jacket wraps snugly around your dog's torso, applying the same steady, gentle pressure used in swaddling and weighted blankets — helping anxious dogs settle during storms, fireworks, and other stressful moments.
See How It Helps
Built for the Moments That Overwhelm Them.
Settles in Minutes
Many dogs relax within 15–30 minutes of putting the jacket on, based on customer-reported outcomes.
Typical time for a dog to start settling
A Fit That Stays Snug
Adjustable straps let you fasten it snugly but not tight, across seven sizes from XS to XXXL.
XS through XXXL, adjustable straps
Based on general canine calming-wrap principles and customer-reported outcomes.
Adjustable sizes, from XS to XXXL, so more dogs can get a snug, comfortable fit.
Calm, Step By Step
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Introduce It Early
Let your dog wear the jacket calmly for a few minutes before a stressful event so they associate it with feeling relaxed.
Fasten Snugly
Straps fasten snugly but not tight — you should be able to slide two fingers underneath comfortably.
Wear It Through the Moment
Keep it on during storms, fireworks, car rides, or vet visits, and remove once your dog has settled.
★★★★★ 4.9 out of 5 (412+ reviews)
Frequently Asked Questions
Is there any setup or assembly?
Most items ship ready to use, with no tools required. Adjustable straps or pockets take just a minute to fit to your pet.
How long does shipping take?
Most in-stock items ship within 8–12 business days via standard parcel carriers.
What if it's not the right fit?
Unused items in original packaging can be returned within 30 days of delivery. See our Shipping & Delivery page for full details.
How do I clean and care for it?
Spot clean with a damp cloth and mild soap, and machine-wash cold where noted. Wipe down hard surfaces regularly and avoid harsh chemicals.
Do you offer sizing help?
Yes — send us your pet's measurements and our team will help you find the right fit, free of charge.
Is there a warranty?
Yes, all Casanvero gear is covered by our standard manufacturer's warranty against defects in materials and workmanship. Reach out to our team any time for support.