Singlesize

Singlesize, sometimes written as single size, is a product sizing designation used to indicate a single, fixed size intended to accommodate a broad range of users. In manufacturing and retail, a singlesize item is designed to minimize or eliminate multiple size variants, relying on design features such as stretch, generous ease, or adjustable elements to fit diverse body shapes or dimensions.

The term appears across several product categories. In apparel, items marketed as one-size-fits-most include hats, scarves, robes, some outerwear accessories, and certain grooming or bath products. In home textiles, singlesize can apply to items like pillows, cushion covers, or some bed linens where a single dimension is used. It may also appear in packaging or accessories that adopt a standard dimension.

Advantages of singlesize include reduced production costs, simpler inventory management, and streamlined marketing. However, it can yield a less reliable fit for many users, potentially reducing comfort and increasing returns or dissatisfaction. Critics argue that singlesize designs may mask non-inclusive sizing and overlook the diversity of body shapes.

In practice, singlesize is often contrasted with size-inclusive or size-specific approaches. Designers may use adjustable closures, stretch fabrics, or looser cuts to improve fit, or they may move toward multiple size options to better accommodate different users. See also one-size-fits-all, free size, universal design.