The phrase "a soft fabric" is correct and usable in written English.
You can use it when describing the texture or quality of a material, particularly in contexts related to clothing, upholstery, or textiles.
Example: "The dress was made from a soft fabric that felt luxurious against the skin."
Alternatives: "a gentle textile" or "a plush material."
The so-called "beanbag" projectile, which can be fired from shotguns and grenade launchers, contains a weighted flexible filler within a soft fabric pouch.
To ease the strain on Mr. Ozawa's back, an elegant bench with a soft fabric cover was placed on the conductor's stand.
The first to enter the space was Holmes, a renowned teacher and contact-improvisation master, looking like a priestess, in a flowing beige dress, gold gloves, and a soft fabric crown decorated with gems.
Such a soft fabric as silk was considered fit only for women; the Roman male was to be a tough and severe character who did not wear Eastern imports.
He made the imaginary tangible with hooded black zippered nylon tunics and trousers that bloused softly at the narrow ankle, and with crushed suits in stark white or faintly metallic black in a soft fabric of acrylic and metal.
A leather loafer by Skechers called Men's Work: Exalt - Closer ($65), which has a soft fabric lining, a removable cushioned insole and a shock-absorbing midsole, and Timberland's Pro Five Star Ashford Lace-Up leather shoe ($110), which the company's Web site notes was designed for restaurant and hospitality industry professionals and has "anti-fatigue technology" meant to support and cushion feet.
Cargo pants come in a softer fabric and are slimmer through the legs than past designs.
The big, thick, plasticky look has been traded in for something a bit more homey, with a softer, fabric covering.
But the jacket's denim nature – also a tough, sturdy fabric – keeps this from being too obvious, at least compared with a softer fabric, like cotton.
Liner is usually made from a softer fabric, while the outer fabric is usually something sturdier.
It is covered with a velvety soft fabric on top of a breathable mesh fiber that wicks away sweat.
