UVCoolix Neck Flap vs Comhats Waterproof Boonie — Which Big-Head Sun Hat?

How to use this comparison

Both hats target readers with larger heads who want nylon sun protection instead of a one-size baseball cap. The UVCoolix Neck Flap Wide Brim Hat and the Comhats Waterproof Boonie Hat solve overlapping problems in different ways. This piece compares listing facts only (ASINs B0F4Y5234T and B0BQBS5B27). We have not wear-tested either hat, and we do not invent ratings or lab scores.

Use the sections below — neck coverage, rain, max head size, packability, and look — then match the winner to your persona.

Neck coverage

UVCoolix builds coverage into the design: a 9.4” fixed neck flap plus a 3.1” brim. The flap is not removable. Ears and the back of the neck get fabric shade as long as the hat sits correctly. Cool-touch lining (88% nylon / 12% spandex) is listed for the sweatband, crown, and inner flap.

Comhats has no neck flap. Shade comes from a 3” brim alone. The back of the neck stays open unless you add a separate gaiter. That is simpler on hot days when a flap feels like extra fabric, and weaker when the sun sits low behind you on water or open trail.

Pick: Neck-shade hikers and anglers → UVCoolix. People who hate flaps → Comhats.

Rain and wet-day use

Comhats is listed as waterproof 100% nylon with UPF 50+. The listing says the 3” brim blocks 97.5% of UV. Mesh crown and four eyelets vent heat while the shell sheds rain. That dual sun/rain role is the boonie’s clearest edge.

UVCoolix is UPF 50+ nylon; the listing says it blocks 98% of UVA/UVB. The page emphasizes cool-touch fabric, mesh eyelets, and the neck flap — not waterproofing. Treat it as a sun hat, not your rain lid.

Pick: Wet docks, drizzle hikes, yard work in showery weather → Comhats. Dry, high-UV days with neck exposure → UVCoolix.

Max head size and fit tools

Both offer XL/XXL bands aimed at big heads, with slightly different ceilings:

Hat	XL/XXL (listing)	Fit adjusters
UVCoolix Neck Flap Wide Brim Hat	~24.8”–25.6” (63–65 cm)	Chin strap + back drawcord
Comhats Waterproof Boonie Hat	~24.8”–26” (63–66 cm)	Locking drawcord at back

Comhats also lists four full bands (S/M through XL/XXL), so smaller and mid sizes are covered if you share the hat or buy for a household. UVCoolix lists M/L, L/XL, and XL/XXL with the cool-touch package and flap.

If your tape measure sits near 26” (66 cm), Comhats has the higher listed max. If you are in the mid-25” range and need a chin strap for wind, UVCoolix lists both chin strap and drawcord.

Pick: Absolute max circumference → Comhats. Wind-prone boats/ridges with chin strap preference → UVCoolix.

Packability

Both are built to compact:

• UVCoolix: Foldable/rollable brim that the listing says springs back to shape.
• Comhats: Crushable enough to fold into a pocket; brim sides can button up so the packed shape stays tidy.

Neither needs a hat box. Comhats leans harder into “stuff it and go.” UVCoolix still packs for a daypack, with the fixed flap adding a little bulk versus a bare boonie.

Pick: Pocket crushability → Comhats. Packable sun hat that still brings a neck flap → UVCoolix.

Look and styling

UVCoolix reads as outdoor sun gear: wide-ish brim, visible neck flap, optional fish-camo and print colorways on the listing. It signals hiking and fishing more than town wear.

Comhats is a classic boonie silhouette. Button the brim sides up for a cowboy-style look, or leave them down. The listing’s plain, low-key design fits fishing, hiking, and yard work without looking like technical cape gear.

Neither is a dress fedora. If you need wedding or cruise straw style, that is a different product category on the site.

Care (same constraint)

Both ask for gentle care: UVCoolix is hand wash only; Comhats is hand wash cool water, air dry. If machine wash is a hard requirement, neither listing satisfies it.

Clear picks by persona

• All-day sun on the trail or water, neck burns easily, head ~25–25.6”: Choose the UVCoolix Neck Flap Wide Brim Hat. Fixed 9.4” flap, UPF 50+ claim, cool-touch lining, six eyelets, chin strap.
• Big head near 26”, mixed sun and rain, no flap wanted: Choose the Comhats Waterproof Boonie Hat. Waterproof nylon, mesh crown, crushable pack, button-up brim.
• Want both waterproofing and a neck flap in one hat: Neither listing fully combines those two. Prioritize the feature you will miss more (rain shell vs neck fabric), or plan a gaiter with Comhats / a rain shell over UVCoolix on wet days.
• Dressy beach or travel straw look: Skip both; look at a big-head straw fedora instead.

Short verdict

Listing facts draw a clean line: UVCoolix wins on neck coverage and cool-touch lining for dry, high-UV days; Comhats wins on waterproof nylon, crush-in-pocket packability, and a slightly larger listed max head size. Match the hat to the weather and the skin you need covered — not to a fake overall “best” score.

Read the UVCoolix listing guide and the Comhats waterproof boonie listing guide.