KastKing Sol Armis UPF 50 Boonie Hat
- UPF 50 sun protection
- Lightweight nylon, breathable, water resistant
- Elastic closure, adjustable fit
- Camouflage pattern, seafoam color
- Machine wash, no stretch
Last refreshed Jul 5, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A light boonie hat with a UPF rating for fishing, hiking and the beach. The listing gives no head circumference or brim width, so sizing is a guess.
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ASIN: B0BGKFSJ7ZCategory: Fishing Hats
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Overview
A UPF rated nylon fabric shades the head and neck in this boonie style hat, and an elastic closure adjusts the fit around the head. It is built for fishing, hiking, paddling and beach days.
The reason to look is the sun rated fabric in a light, washable hat made for the water. The limitation is that no head size, brim width or chin strap detail is listed, and the water rating is stated two different ways.
Who it's for
Anglers, paddlers and hikers who spend long hours in summer sun can wear it for shade. Buyers with a larger or smaller head should check sizing with the seller, and those who want a wide brim should compare listed brim widths.
Pros and cons
- UPF rated fabric
- Light nylon material
- Adjustable elastic fit
- Head size not listed
- Brim width not listed
- Waterproof and water resistant both claimed
Performance notes
The fabric blocks ultraviolet light according to its UPF rating, and a breathable weave lets heat escape. Nylon dries quickly after a splash, and an elastic closure holds the hat on the head. With no stretch in the fabric, the fit depends on the adjustment alone.
Specifications
| Brand | KastKing |
|---|---|
| Construction & materials | |
| Material Type | Nylon |
| Fabric Type | Lightweight breathable |
| Apparel Fabric Stretch | No stretch |
| Color | Seafoam |
| Other details | |
| Ultraviolet Protection Factor | UPF 50 |
| Hat Form Type | Sun hat, boonie |
| Fit Type | Adjustable |
| Apparel Closure Type | Elastic |
| Water Resistance Level | Water resistant |
| Pattern Style | Camouflage |
| Product Care Instructions | Machine wash |
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Frequently asked questions
What size is the KastKing Sol Armis hat?
The listing gives an adjustable fit with an elastic closure. It gives no head circumference range.
Is the KastKing Sol Armis hat waterproof?
The listing says water resistant in one field and waterproof true in another. Treat it as water resistant.
Can the hat go in the washing machine?
Yes. The care instructions read machine wash.
What is the UPF rating?
UPF 50. The sun protection field also shows a garbled value.