Armhole

Updated: 2026-09-13

Overview

The armhole refers to the precisely shaped opening in a garment's bodice where sleeves are attached or the arm passes through in sleeveless designs. In apparel manufacturing, its precise engineering balances structural integrity with wearer mobility. Standard armhole measurements vary by garment type (e.g., dress shirts typically have higher armholes than casual sweaters). Industrial pattern-making uses standardized sizing systems, though premium brands often develop proprietary armhole geometries for enhanced fit.

Product Features

Modern armholes incorporate ergonomic curves rather than simple circular cuts, with depth and shape varying by garment function. Athletic wear employs articulated armholes for maximum range of motion, while formal wear prioritizes clean lines. Key technical features include seam allowance (usually 1-1.5cm in mass production), notches for sleeve alignment, and reinforcement stitching. High-end garments may feature bias tape finishes or Hong Kong seams for durability and comfort.

Main Uses

Beyond basic sleeve attachment, armholes serve multiple functional purposes in garment design. They influence posture presentation in structured jackets while allowing ventilation in tropical-weight clothing. Specialized applications include: raglan sleeves for sports uniforms (distributing shoulder stress), extended armholes in maternity wear, and gusseted designs for workwear requiring overhead reaching. In sleeveless garments, the armhole finish becomes a visible design element requiring decorative edges.

Culture and Development

Armhole engineering evolved significantly from medieval tunics to Victorian tailoring. The 19th century introduced curved armhole patterns, while 20th century sportswear innovations created raglan and dropped shoulder variations. Contemporary developments include 3D-knit seamless armholes in athleisure and laser-cut finishes in technical outerwear. Asian and Western sizing systems differ substantially in armhole depth proportions, reflecting cultural preferences in fit and mobility.

B2B Procurement Guide

Bulk garment buyers should specify: armhole measurement method (ISO 8559-1 standard preferred), seam construction type, and stretch allowance for knit fabrics. Sample evaluation should test mobility through full range of motion. Production considerations include: automated pattern grading for size runs, interfacing requirements for structured armholes, and QC checks for puckering. Leading manufacturers offer proprietary armhole technologies like reinforced stress points for workwear applications.