Many modular couches let you rearrange individual sections into straight-line, L-shaped, U-shaped, or sleeper configurations so they can adapt to different rooms and seating needs.

Listings show seating options ranging from single-seat pieces up to couches that seat about four people, with most listings indicating 1–4 seats.

Cushion constructions vary and include double-layer systems (an ultra-soft top layer over firmer support), high-density foam, coil springs, and sprung foam, depending on the listing.

Some listings include movable ottomans, hidden under-seat storage, and built-in side storage pockets in the armrests.