• Opah Gear Fathom K4 Kayak Fish Cooler Bag Kill Bag. Protect your catch longer. The most reliable fish bag on the market. Purposely built to be the highest quality fish cooler bag in sportfishing. Even great when used as an insulated cooler bag while out camping or for other normal use. The highest quality insulated bag. A perfect Tuna Kill Bag, Dorado Kill bag, or yellowtail kill bag.
  • Opah Gear Fathom K4 Kayak Fish Cooler Bag Kill Bag. Protect your catch longer. The most reliable fish bag on the market. Purposely built to be the highest quality fish cooler bag in sportfishing. Even great when used as an insulated cooler bag while out camping or for other normal use. The highest quality insulated bag. A perfect Tuna Kill Bag, Dorado Kill bag, or yellowtail kill bag.
  • Opah Gear Fathom K4 Kayak Fish Cooler Bag Kill Bag. Protect your catch longer. The most reliable fish bag on the market. Purposely built to be the highest quality fish cooler bag in sportfishing. Even great when used as an insulated cooler bag while out camping or for other normal use. The highest quality insulated bag. A perfect Tuna Kill Bag, Dorado Kill bag, or yellowtail kill bag.
  • Opah Gear Fathom K4 Kayak Fish Cooler Bag Kill Bag. Protect your catch longer. The most reliable fish bag on the market. Purposely built to be the highest quality fish cooler bag in sportfishing. Even great when used as an insulated cooler bag while out camping or for other normal use. The highest quality insulated bag. A perfect Tuna Kill Bag, Dorado Kill bag, or yellowtail kill bag.
  • Opah Gear Fathom K4 Kayak Fish Cooler Bag Kill Bag. Protect your catch longer. The most reliable fish bag on the market. Purposely built to be the highest quality fish cooler bag in sportfishing. Even great when used as an insulated cooler bag while out camping or for other normal use. The highest quality insulated bag. A perfect Tuna Kill Bag, Dorado Kill bag, or yellowtail kill bag.
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Opah Gear Fishing Bags

Opah Fathom K4 Kayak Cooler Bag, 46"L x 28"W (Tapered) x 10"H

$349.00 USD
$399.00 USD $349.00 USD
Sale Sold out
Shipping calculated at checkout.

The Opah Fathom K4 Kayak Kill Bag is designed to meet the needs of serious anglers who want top-notch gear for their kayak fishing adventures. This durable, high-performance kill bag features a flat-bottom design that ensures stability on your kayak and minimizes tipping or shifting while paddling. Its compact form makes it ideal for smaller vessels, while offering ample storage space for your catch.

Built with superior insulation, the Fathom K4 keeps your fish fresh for hours, even on hot days. The leak-free, easy-to-clean liner ensures that no mess spills out, keeping your kayak clean and your catch in optimal condition. Reinforced handles and durable zippers make it easy to carry and access your fish quickly. Whether you're targeting pelagic species or inshore fish, the Opah Fathom K4 is your reliable, tough, and efficient partner on the water.

Perfect for any kayak angler looking for a professional-grade kill bag that doesn't compromise on performance or portability.

  • 100% Leakproof: Specialized gusseted bottom and non Corrosive YKK zipper prevent leaks.


  • Fully Insulated: 2” dense closed-cell foam insulation keeps fish ice cold for up to 4 days.


  • Low Maintenance: Fully Washable, UV and Mildew resistant, with a built-in drain plug for easy drainage and cleanup.


  • Convenience: Exterior mesh compartments provide additional storage for fishing gear, accessories and drinks.


  • Durable: Made from Marine Grade 18 oz. lead-free Vinyl Polyester.


  • 46"L x 28"W (Tapered) x 10"H


  • Fits most larger Kayaks