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KastKing

KastKing HyperSeal Waterproof Tackle Box

  • Number Of Compartments: 1
  • Water Resistance Level: Waterproof
  • Maximum Weight Recommendation: 0.99 pounds
  • Material Type: Polyester

Last refreshed Aug 4, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.

Our verdict

A black waterproof tackle box built around the standard 3600 and 3700 tray sizes, a practical pick for anglers who want tray flexibility in one sealed case.

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ASIN: B0DH2LN7ZBCategory: Tackle Boxes

Overview

A KastKing HyperSeal waterproof tackle box in black, built with a polyester exterior and sized to hold 3600 and 3700 series tackle trays, the two standard tray sizes most third party tray makers use. The HyperSeal name points to a sealed closure meant to keep gear dry.

Supporting both 3600 and 3700 tray sizes gives an angler flexibility to mix shallow and deep trays inside the same case, rather than being locked into one tray depth. A polyester exterior over a rigid interior is common in this category, pairing a tougher tray compartment with a lighter, packable outer shell than an all hard-plastic box.

  • Waterproof HyperSeal design
  • Fits 3600 and 3700 tackle trays
  • Polyester exterior, black color
  • Sold as a single unit

Who it's for

Anglers who already own or plan to buy standard 3600 or 3700 size tackle trays and want one waterproof case to carry them. Less useful for anglers who use a nonstandard tray size or prefer an all hard-shell box.

Pros and cons

Pros
  • Compatible with both 3600 and 3700 size tackle trays
  • Waterproof sealed design keeps gear dry
Cons
  • Not compatible with nonstandard tray sizes
  • Polyester exterior may not be as rigid as an all hard-shell box

Performance notes

The HyperSeal design relies on a sealed closure to keep water out of the tray compartment, and supporting two tray sizes means the case can hold shallower trays for small terminal tackle alongside deeper 3700 trays for bulkier lures.

Specifications

BrandKastKing
Dimensions & fit
Maximum Weight Recommendation0.99 poundslower than 93% of 41 tackle boxes
Item Dimensions L X W X H10.8 × 7.1 × 1.8 inches
Construction & materials
Material TypePolyester
ColorBlack
Included components
Unit Count1
Other details
Number Of Compartments1
Water Resistance LevelWaterproof

Closest rivals on specs

OriGlam Double Sided Tackle Box 16 Compartments
  • Maximum Weight Recommendation 0.99 vs 0.49 pounds (+102%)
Plano 106100 Small Waterproof Boxes 3 Pack
  • Maximum Weight Recommendation 0.99 vs 0.18 pounds (+450%)
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Frequently asked questions

What tray sizes fit this KastKing tackle box?

It is built to hold both 3600 and 3700 size tackle trays.

Is this box waterproof?

Yes, it uses KastKing's HyperSeal design, a sealed closure meant to keep water out.

What color does it come in?

Black.