KastKing HyperSeal Waterproof Tackle Box
- Tackle Box
- 1
- Polyester
- Black
- Better rated than 95%
- More reviewed than 59%
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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How it ranks among the 66 tackle boxes we track
4.8★ across 602 Amazon ratings, Bayesian-smoothed toward the category average.
602 Amazon ratings, weighted on a log scale so huge counts don't drown everything.
700+ bought on Amazon last month.
Brand identity, imagery, description and spec coverage.
The ProductDome score is separate from the Amazon rating shown above: it combines the Bayesian-smoothed Amazon rating with evidence volume, tracked demand, and data quality across the 66 tackle boxes we track - how the scorecard works · full tackle boxes data report. Confidence: high - strong rating volume and complete data.Last refreshed Aug 4, 2026. Data-computed, not a hands-on test. Compiled by the ProductDome Research Team.
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.
Strengths and trade-offs
Drawn from this product's published specifications.
- Compatible with both 3600 and 3700 size tackle trays
- Waterproof sealed design keeps gear dry
- 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
| Brand | KastKing |
|---|---|
| Pieces | 1 |
| Material | Polyester |
| Color | Black |
Other KastKing tackle boxes
How it compares
This product against the closest alternatives we track in tackle boxes.
| Product | Amazon rating | Ratings | ProductDome score |
|---|---|---|---|
| KastKing HyperSeal Waterproof Tackle BoxThis product | 4.8 / 5 | 602 | 4.4 / 5 |
| Plano 620206 Tackle BoxPlano | 4.6 / 5 | 9,200 | 4.5 / 5 |
| Flambeau 4007 Tackle BoxFlambeau | 4.5 / 5 | 10,700 | 4.5 / 5 |
| PLUSINNO MD-FL137-US Tackle BoxPLUSINNO | 4.6 / 5 | 2,300 | 4.5 / 5 |
| YakAttack BLP-PRO-13X13-BG Tackle BoxYakAttack | 4.7 / 5 | 862 | 4.2 / 5 |
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Questions about the KastKing tackle boxes
Common buyer questions answered straight from the product spec data - no fluff, no "it depends".
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.