Head-to-head · Best Grill Covers

UNICOOK Heavy Duty Waterproof Barbecue Grill Cover 58-Inch vs Weber 7139 Premium Grill Cover for Spirit 300 Series

Which is the better buy? Side-by-side on rating, price, strengths, and watch-outs — with the published ratings we averaged to get there.

The short answer

Weber 7139 Premium Grill Cover for Spirit 300 Series comes out ahead by a narrow margin (4.4 vs 4.5). The gap is mostly about Weber Spirit 300 series (pre-2025) and Spirit 400 four-burner owners who want a tailored OEM sleeve fit and the longest warranty in this category — read the strengths below before deciding.

Ranked #3 in Best Grill Covers

UNICOOK Heavy Duty Waterproof Barbecue Grill Cover 58-Inch

4.4

$44

UNICOOK's 58-inch Heavy Duty cover is the value pick for shoppers who want true waterproofing instead of the water-resistant treatments on the Classic Accessories Veranda and the Weber OEM lineup. Bob Vila singled it out as Best for Cold Weather because the vinyl coating stays flexible to 0 degrees Fahrenheit, where most PVC covers crack. The trade-off is bulk: the cover is noticeably heavier and stiffer than the Weber polyester, which makes off-season folding awkward but also makes it more durable in tropical-rain climates where the lighter polyester covers wick through after extended exposure.

Strengths

— Solution-dyed polyester with full PVC undercoating is genuinely waterproof rather than water-resistant
— Bob Vila tested it as the Best for Cold Weather pick because the fabric does not crack down to 0 degrees Fahrenheit
— Wide covered-mesh vents prevent the condensation and mildew buildup common to non-vented vinyl covers

Watch-outs

— Heavier and stiffer than a polyester-only cover; harder to fold for off-season storage
— Vinyl coating can develop a faint plasticky smell when first unboxed in hot sun
— No warranty period published by the manufacturer

$44 · Check Price on Amazon Full review →

Higher ratedRanked #2 in Best Grill Covers

Weber 7139 Premium Grill Cover for Spirit 300 Series

4.5

$90

The Weber 7139 is the OEM cover Weber currently ships for Spirit 300 series (pre-2025) and Spirit 400 four-burner grills. It is what you buy when you own a current-model Weber Spirit and want a tailored sleeve that looks like it belongs on the grill rather than a baggy universal cover. Bob Vila's 2026 review highlights the same Weber Premium line as the pick for Spirit owners, and notes that the polyester construction with woven UV inhibitors holds up notably better than the rubberized fabric Weber used on its older Genesis-era covers (which AmazingRibs Pitmaster Club members repeatedly flagged for cracking after two seasons).

Strengths

— Tailored sleeve fit for Spirit 300 series and Spirit 400 4-burner means no flapping or wind catch
— 100% polyester construction stays pliable in subfreezing temperatures where vinyl covers crack
— UV inhibitors woven into the fabric resist fading visibly better than house-brand alternatives

Watch-outs

— Only fits Weber Spirit 300 and Spirit 400 four-burner; useless on Genesis or non-Weber grills
— Pricier than universal covers of similar fabric weight
— Some forum users report water pooling on the flat lid section in heavy rain

$90 · Check Price on Amazon Full review →

How they stack up

UNICOOK Heavy Duty Waterproof Barbecue Grill Cover 58-Inch

More fully waterproof than the Classic Accessories Veranda 73912 (PVC undercoating vs Gardelle laminate) but heavier and harder to fold. Less tailored than the Weber 7139 Premium for Spirit owners but fits a much wider range of grills and costs half as much. The right pick for shoppers who prioritize all-weather sealing over OEM-matched aesthetics.

Weber 7139 Premium Grill Cover for Spirit 300 Series

Tighter, more tailored fit than the universal Classic Accessories Veranda 73912 if you own a current-model Weber Spirit, but useless on any other brand. Better cold-weather performance than the UNICOOK Heavy Duty universal because polyester stays pliable below freezing while the UNICOOK's vinyl coating gets stiff. Three-year warranty is the longest of the five covers in this comparison.

Specs side-by-side

Spec	UNICOOK Heavy Duty Waterproof Barbecue Grill Cover 58-Inch	Weber 7139 Premium Grill Cover for Spirit 300 Series
Fit Dimensions	58"W x 25"D x 44.5"H	52"W x 27"D x 42"H (out of carton)
Material	Solution-dyed polyester with PVC waterproof undercoating	100% polyester with UV inhibitors
Water Resistance	Fully waterproof PVC coating	Breathable, water-resistant treatment
Cold Weather	Rated to 0 degrees Fahrenheit without cracking	Stays pliable in subfreezing temperatures
Air Vents	Yes, wide covered mesh vents	—
Tie-Down Straps	Yes, 1.5-inch fastening straps	Yes, fastening straps
Carry Handle	Yes, sturdy fabric handles	—
Color	Black	—
Compatibility	—	Spirit 300 series (pre-2025) + Spirit 400 4-burner
Care	—	Spot clean only
Warranty	—	3-year limited

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