The pads must be homogeneous and free from foreign matter, dirt, or hard lumps.

They should be free from defects that can affect appearance or utility, such as stains or discoloration.

Pads should be free from unpleasant odors.

Absorption Capacity: Pads should have sufficient absorbency to manage normal to heavy flow.
No Leakage: They should be designed to prevent leakage and backflow of menstrual fluid.
Stay-in-Place: The adhesive layer should be strong enough to keep the pad securely in place during use.
No Disintegration: The pad should not disintegrate or fall apart within the recommended wear time.

Length: Regular: 230 mm to 240mm
Maxi (Large): 230mm to 240mm
Super Maxi (Extra-Large): 270mm to 285mm
Width (excluding wings): Extra wings 60mm to 100mm
Width (with wings): 155mm ± 10mm

Top Sheet: Often made of soft, hydrophilic non-woven fabric to draw in fluid quickly and keep the user dry.
Absorbent Core: Typically made of absorbent materials like fluff pulp or superabsorbent polymers (SAP).
Backsheet: A fluid-resistant barrier to prevent leakage.
Wings: Often made of a soft, non-woven material that helps to secure the pad in place.

No Foreign Matter: The pads should be free from dust, particulate matter, or other foreign materials.
Unscented: Some specifications recommend unscented pads for better hygiene.
Mandatory BIS Certification: In India, sanitary napkins are covered under the mandatory BIS (Bureau of Indian Standards)