L/S
Initialism of long sleeve.
L/S: the garment length code that matters on the factory floor
L/S is shorthand for long sleeve, used across apparel manufacturing to distinguish sleeve length on garment specifications, purchase orders, and production runs. It appears opposite S/S (short sleeve) in sizing matrices and bill of materials documents. On a factory floor or in a wholesale catalog, L/S immediately signals that a shirt, blouse, or similar item carries sleeves extending to the wrist or near it, typically 24 to 27 inches from shoulder seam to cuff on an adult medium.
The abbreviation saves space on spec sheets and purchase orders where hundreds of line items must fit on a single page. A buyer placing an order might specify "100 units, style 4521, L/S, navy, size M" rather than writing out the full phrase. This brevity is standard across mills, distributors, and retail operations globally, making L/S a genuine lingua franca in cut-and-sew environments.
Where the distinction matters
L/S variants exist depending on garment type and market. A long sleeve dress shirt may have a two-piece sleeve with a vent, while a basic knit long sleeve tee has a simple tubular sleeve. Sleeve length itself varies by intended fit: a regular fit long sleeve shirt differs from a petite version. Patterns, cutting dies, and sewing operations all branch based on this one code, so errors in L/S designation can cascade through production, creating inventory mismatches or customer returns.
In knit goods, L/S production typically runs longer lead times than S/S because additional yardage must be dyed, cut, and finished. In woven shirting, L/S requires more complex pattern grading and sleeve attachment operations. Fabric shrinkage also affects final sleeve length, which is why mills working in L/S categories often set tighter quality windows than they do for shorter items.
The term appears in compliance documents too. Garment care labels and country-of-origin certifications may reference L/S when describing which styles are in scope for a given production batch or audit. Storage and shipping codes also use L/S to organize receiving and inventory by sleeve type, preventing the wrong version from reaching the sewing line.