Product listings typically state holding capacity either as a sheet count or as a thickness. Common examples are around 20 sheets or up to about 1" of paper.
Low-profile clips often use rubber grips or snug-fitting clip surfaces and smooth edges to hold paper securely without tearing.
Some clipboards include built-in tools such as rulers (for example a 12" ruler) or standard and metric measurement markings etched into the sides.
Loading is commonly done two ways: a press-to-open or pinch mechanism, and a clip or clamp that tilts or pulls back to allow paper to be inserted.
Descriptions often highlight durable injection-molded plastic construction and clips that are labeled rust-resistant.