Waterproof Dog Car Seat Extender for Large & Medium Dogs (L)


✅ Editor’s Pick


✈️ Airline & Flight Travel


🧳 Under-Seat Carry-On


🌬️ Cabin Ventilation

📸 Product Images

Waterproof Dog Car Seat Extender for Large & Medium Dogs (L)

Current Amazon Price
EUR55.22 - EUR52.46
(as of Jan 19, 2026 17:20:55 UTC)
Prices and availability can change. Amazon’s price at checkout applies.

🧭 How This Flight Carrier Was Evaluated

  • 📏 Under-seat fit (dimensions, flexibility, structure)
  • 🧾 Airline-policy alignment (size limits vary by airline/aircraft)
  • 🌬️ Ventilation and airflow (mesh coverage)
  • 🔒 Security (zippers, clip points, closure reliability)
  • 🧳 Airport handling (carry comfort, stability while walking)
  • 🧼 Cleaning (removable pad, wipeable materials)

📏 Flight Fit Check (Under-Seat Compatibility)

  • 🧾 Compare the carrier’s listed dimensions with your airline’s under-seat requirements
  • 🐕 Confirm your dog can turn and lie down comfortably inside the interior space
  • 🧳 Soft-sided carriers typically compress better under the seat during flight
📝 Airlines and aircraft layouts differ; approval depends on measurements and under-seat clearance.

🛫 Boarding & Layovers (What Matters in Airports)

  • 🧳 Carry comfort: strap/handles for longer terminal walks
  • 🔒 Secure closures: reduces risk during security checks and crowded gates
  • 🌬️ Ventilation: useful during boarding lines and delays
  • 🧼 Easy cleanup: helpful for long travel days


⚙️ Airline & Flight Travel Overview

✈️ Best Use In-cabin flights, under-seat carry-on pet travel
📏 Under-Seat Fit Flexible structure to adapt to under-seat space (model dependent)
🌬️ Ventilation Mesh panels designed to maintain airflow
🔒 Security Closures aimed at reliable travel use (zippers/clips vary by model)
🧼 Cleaning Removable pad or wipe-clean materials (model dependent)

See reviews + more photos on Amazon


👉 View on Amazon (Reviews + Photos)

🌟 Pros & Cons

✅ Pros

  • ✈️ Built around in-cabin flight needs
  • 🌬️ Breathable mesh for airflow
  • 🧳 Comfortable to carry through airports
  • 🔒 Secure closures for travel environments (model dependent)
⚠️ Cons

  • 📏 Under-seat clearance varies by airline and aircraft
  • 🐕 Fit depends on dog measurements and carrier interior space


📝 Product Details

Product description

The video showcases the product in use.The video guides you through product setup.The video compares multiple products.The video shows the product being unpacked. Gimars Large Dog Car Seat Merchant Video

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1 Easy To Install

2 Easy To Store

3 Easy To Clean

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1 Why Choose US

2 Honeycomb Panels

3 Waterproof Materials

4 Anti-slip Bottom

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1 Mesh Windows 2 Storage Pocket 3 Dog Seatbelt

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Product Dimensions ‏ : ‎ 28.5 x 22.05 x 21.5 inches; 7.12 Pounds
Item model number ‏ : ‎ GIM-GW04-BXL
Date First Available ‏ : ‎ July 18, 2025
Manufacturer ‏ : ‎ Gimars
ASIN ‏ : ‎ B0FJ2L9ZKQ
Best Sellers Rank: #190,138 in Pet Supplies (See Top 100 in Pet Supplies) #678 in Dog Booster & Car Seats
Customer Reviews: 4.3 4.3 out of 5 stars (98) var dpAcrHasRegisteredArcLinkClickAction; P.when(‘A’, ‘ready’).execute(function(A) { if (dpAcrHasRegisteredArcLinkClickAction !== true) { dpAcrHasRegisteredArcLinkClickAction = true; A.declarative( ‘acrLink-click-metrics’, ‘click’, { “allowLinkDefault”: true }, function (event) { if (window.ue) { ue.count(“acrLinkClickCount”, (ue.count(“acrLinkClickCount”) || 0) + 1); } } ); } }); P.when(‘A’, ‘cf’).execute(function(A) { A.declarative(‘acrStarsLink-click-metrics’, ‘click’, { “allowLinkDefault” : true }, function(event){ if(window.ue) { ue.count(“acrStarsLinkWithPopoverClickCount”, (ue.count(“acrStarsLinkWithPopoverClickCount”) || 0) + 1); } }); });
【+40% EXPANDED & REINFORCED SAFE SPACE】The honeycomb hard bottom in this dog car seat for large dogs extends 40% more backseat space, while reinforced PVC pipes & honeycomb panels create a super-stable, anti-collapse structure for full protection
【PASSENGER & CHILD-SEAT FRIENDLY DESIGN】Optimizes backseat space for both pets and passengers. High side panels prevent your dog from disturbing drivers or children, ideal for family trips
【NON-SLIP BASE & ANXIETY-REDUCING MESH WINDOW】Anti-slip bottom prevents falls during sudden brakes/turns. The breathable mesh windows in this dog travel seat for car reduce heat anxiety on long summer trips
【UNIVERSAL FIT FOR MOST VEHICLES & DOGS】 L size accommodates large/medium dogs or 2-3 small dogs. Compatible with sedans, SUVs, and trucks
【WATERPROOF & SCRATCH-RESISTANT PROTECTION】This half seat dog hammock for car features waterproof TPU/Oxford cloth resisting liquids and scratches. Includes safety belt + carry bag
【1-MINUTE SETUP & 24/7 SUPPORT】Pre-assembled honeycomb panels enable installation in 1 minute. 24-hour customer service provided

🏁 Final Assessment

As an airline-approved dog carrier for airline & flight travel, this option is most appropriate for
owners seeking an under-seat, in-cabin carrier with ventilation and travel handling suited to airports, boarding lines, and flights.
Performance depends on matching the carrier’s dimensions to airline requirements and choosing the correct size for the dog.

  • ✅ Best match: in-cabin pet travelers with small dogs
  • ✅ Best use: flights, airports, and layovers
  • ✅ Priority features: under-seat fit, airflow, secure closures

If the size and materials match what you need, check today’s price and the latest reviews before you decide.


🛒 Get It on Amazon (Check Availability)


❓ FAQ: Airline & Flight Travel

Does “airline-approved” mean it fits every airline?

No. Under-seat dimensions and pet policies vary by airline and aircraft. Compatibility depends on carrier measurements and airline limits.

What matters most for in-cabin flights?

Under-seat fit, ventilation, secure closures, and carry comfort for airports and boarding lines.

How do I choose the right size for my dog?

Compare your dog’s length/height to the carrier’s interior dimensions listed on the retailer page.



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Prices and availability are subject to change.

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