This Bestselling Sofa Just Got a Smaller Footprint—Without Sacrificing an Inch of Lounge Space

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You found the sofa. It comes in your color, the layout is exactly what you’ve been searching for, and you can already picture yourself spending Sunday afternoons curled up with a book. You pull out the measuring tape one last time… only to confirm you’re a few inches short of making it work. That’s the heartbreak that 7th Avenue’s Thin Arm collection is trying to save shoppers. Even better, instead of shrinking the seat itself, the brand simply slimmed down the arms to save almost a foot of space. And suddenly, the couch that almost fit becomes the one that actually does—all while keeping the same cozy deep seat, washable covers, and endlessly customizable design.

Slim Arms, Same Deep Seat

The entire premise of the Thin Arm collection comes down to four inches. By swapping the brand’s standard 9-inch arms for 4-inch versions, 7th Avenue reclaims up to 10 inches of overall width without compromising the size of the seat itself. That means you still get the same lounge-worthy depth, just in a silhouette that feels lighter and easier to slip into apartments, narrow living rooms, or awkward layouts where every measurement counts.

Modular Design That Evolves With You

Like the rest of 7th Avenue’s lineup, these sofas are built from interchangeable modules that can be rearranged long after delivery day. Start with an apartment-friendly two-person loveseat (from $1,730), add a chaise when you move into a bigger place, or build all the way up to a nine-seat U-shaped sectional with ottomans when you reach forever-home status.

You can also customize everything from seat depth (classic at 39 inches or extra-deep at 47 inches) to hidden storage modules on the corners, middle, or in your ottoman. Even the back cushions can be fine-tuned. They arrive “medium-firm” but are easily adjusted by removing or adding the included fill packets until they feel just right.

Machine-Washable Fabrics and Thoughtful Materials

Life happens, and this sofa is designed to be ready for it. The PFAS-free water-repellent finish (meaning it’s made without the “forever chemicals” commonly used to make fabrics stain-resistant) helps spills bead up before they soak in, so everything from coffee to red wine has a better chance of staying on the surface for a quick swipe. Better yet, every upholstery option is also OEKO-TEX certified and crafted without formaldehyde, added flame retardants, or other harmful chemicals, making it a cleaner choice for your home without sacrificing durability. And beneath the covers, a memory foam-blend is paired with hypoallergenic down-alternative fill that delivers that sink-in comfort without requiring constant fluffing after every Netflix marathon.

Available in 22 colors across machine-washable performance chenille, textured weave, and premium velvet, the removable zip-off covers make it just as easy to refresh your living room with a new look as they do to clean up after everyday messes. 

Good to know: 7th Avenue offers a 10-day return window in original packaging and a complimentary one-time fabric color exchange within 30 days if your first choice doesn’t end up working in your space.

Shop the 7th Avenue Thin Arm Collection