"White piping" refers to a decorative strip or trim that is white in color. It is commonly used in clothing, upholstery, or home decor to add a contrasting or finishing touch. Full definition
The red pants look sporty and chic when paired with a black track jacket with white piping detail. (myntra.com)
These accents are also carried on fully through the interior of both models, for example with blue or white piping on the car seats. (myelectriccarforums.com)
Crafted from velvet fabric, the casual track shorts emphasizes an elastic waistline and modern white piping detail, in a comfy fit. (zaful.com)