Boat & Marine Cushions

Custom Boat Cushions and Marine Seat Cushions for Every Area of Your Boat

Boat cushions take more punishment than almost any other seating surface — saltwater, direct sun, humidity, and constant motion. Marine-grade fabric must resist water, UV rays, and fading to maintain both function and appearance, and even the best fabric becomes useless without the right foam foundation underneath it. Off-the-shelf cushions rarely match the non-standard shapes that boat seating requires: cockpit corners, V-berth tapers, helm station angles, and L-shaped lounge configurations all need custom cuts. A custom marine cushion made to your boat's actual measurements restores comfort and fit that generic replacement parts cannot match.

This collection covers every major seating area and shape found on sailboats, powerboats, pontoons, and center console boats. Each product page is built around a specific boat area or cushion shape so you can find the right option without guessing.

Browse by Boat Area and Cushion Shape

• Replacement Boat Cushions — a general-purpose custom boat cushion replacement for any boat seat where the original foam or cover has worn out, faded, or been damaged by sun and saltwater.
• Boat Seat Cushions — square and rectangular marine seat cushions cut to your exact deck dimensions, for bench seating, cockpit seats, and open boat seating areas.
• Boat Cockpit Cushions — custom cushions for sailboat and powerboat cockpit seating, shaped to fit the angled seats, coamings, and corner configurations specific to cockpit areas.
• V-Berth Boat Cushions — tapered and angled cuts for V-berth sleeping areas, where standard rectangular cushions leave gaps at the narrow bow end of the berth.
• Triangle 90-Degree Cushion for Boat — right-angle triangle cushions for bow corners, quarter berths, and any boat seating area where the seat meets at a 90-degree angle.
• L-Shape Boat Cushions — custom L-shaped marine cushions for pontoon lounges, aft cockpit wraparound seating, and any boat area where two seat sections meet at a corner.
• Square and Rectangle Boat Seat Cushions — flat-cut marine cushions in custom square or rectangular dimensions for helm seats, bench seats, and any open deck seating that needs a made-to-measure pad.

Fabric Options for Boat and Marine Cushions

Boat cushion fabric must handle conditions that indoor and outdoor patio fabrics are not built for: salt spray, mildew in enclosed spaces, UV exposure from sun reflected off water, and abrasion from hardware and rough surfaces. Marine Sunbrella is a widely popular choice for cockpit cushions, interior salon seating, helm seats, and V-berth cushions — it resists wear and tear with constant exposure to the elements. Marine-grade vinyl is the other primary option, offering a fully waterproof surface that wipes clean and holds up to saltwater contact. For below-deck cabin cushions protected from direct water, woven canvas upholstery fabrics in synthetic fibers also hold up well in the humidity of a marine environment. All fabric options at uscushion.com are available with a UV-treated YKK zipper cover for washing or seasonal replacement.

Foam for Boat Cushions — Exterior vs Interior

Foam selection depends on where the cushion lives on the boat. Dry-fast reticulated open-cell foam is the standard choice for exterior cockpit and deck cushions — its open-cell structure allows rapid drainage and drying after water exposure, resisting mold and mildew in areas where waves and rain reach the seating. For interior cabin seating protected from direct water, polyurethane foam provides better comfort and support for extended seating, with antimicrobial treatment available for areas exposed to humidity. For V-berth sleeping cushions used by liveaboards or frequent cruisers, high-density foam with a longer compression lifespan is the better investment over budget-grade marine foam that flattens within a season. Custom foam type and thickness are available on every product page in this collection.