Trapezoid Outdoor Seat Cushions — Custom Size & Weather-Resistant Fabric

Most outdoor cushion retailers stock rectangular pads in a handful of fixed sizes. If your patio bench, deck chair, or built-in seat has a trapezoid shape, you either cut a rectangular cushion down yourself or leave the furniture bare.

USCUSHION cuts every trapezoid outdoor seat cushion to the exact dimensions you provide at checkout. You enter the front width, back width, depth, and thickness. We cut the foam, wrap it in your chosen outdoor fabric, and ship it to your door.

Why customers choose us:

• Precision trapezoid cutting: Every cushion is cut to your exact front width, back width, and depth measurements so the fit is flush on all sides with no trimming needed.
• Seat and back set available: Order a matching trapezoid back cushion in the same outdoor fabric and dimensions for furniture that needs both.
• Weather-rated foam and fabric: Both the foam core and the cover fabric are selected for outdoor durability, not repurposed indoor materials.
• Optional tie-down straps: Add straps at checkout to keep trapezoid outdoor seat cushions in place on windy patios or boat seats.
• Removable covers with YKK zippers: Covers unzip for end-of-season washing or storage, extending the life of the cushion through multiple years of outdoor use.

You May Also Like:

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• US Cushion® Custom Bench cushion Indoor Outdoor

Trapezoid outdoor seat cushions solve a problem that rectangular cushions never can: furniture with angled sides, tapered fronts, or geometric shapes that leave gaps no matter how you reposition a standard pad. These cushions are precision-cut to your exact trapezoid dimensions, so they sit flush on the seat surface without overhang, sliding, or bunching at the corners.

Perfect for:

• Trapezoid patio benches with angled sides built into deck or garden designs
• Outdoor dining sets with tapered seat frames that standard cushions never fit correctly
• Built-in retaining wall benches and angular garden seating with non-rectangular profiles
• Boat seats and marine bench cushions shaped to follow the hull or console contour
• Poolside loungers and sunbed platforms with geometric or tapered dimensions
• Porch and deck chairs with custom-built frames that use a trapezoid seat base

Each order can include a matching back cushion cut to the same trapezoid shape, so the seat and back form a complete set for your furniture.

Outdoor trapezoid cushions need fabrics built to handle sun, rain, and extended exposure without fading or breaking down. Our outdoor fabric catalogue includes solution-dyed performance weaves and marine-grade options rated for full outdoor use, not just occasional shade seating.

All fabrics are:

• UV-resistant and solution-dyed to prevent fading through full seasons of sun exposure
• Weather-resistant and quick-drying so cushions can stay outside through light rain
• Mold and mildew resistant, which matters for trapezoid bench cushions that sit on wood or stone surfaces
• Available in marine-grade vinyl for boat and poolside applications that see direct water contact
• Sewn with YKK zippers on removable covers so you can wash or replace the cover without replacing the foam

Sunbrella-style solution-dyed acrylic is the most popular choice for patio and deck use. Marine-grade vinyl works best for boat seats and poolside furniture that gets wet regularly.