How to Choose the Right EAS sew-in label for Your Clothes

A Comprehensive Guide to Selecting Sew-in EAS Labels for Apparel

Sew-in EAS labels (soft anti-theft tags) are sewn directly into the garment—such as on the inner lining, side seam, or collar label—during manufacturing. Unlike adhesive soft tags or detachable hard tags, they allow for integrated processing at the factory and contactless deactivation at the point of sale, eliminating the need for tag removal.
Crucial Prerequisite: The label must be compatible with the store's existing EAS gate system—either RF (8.2 MHz) or AM (58 kHz)—as these technologies are not interchangeable.
I. Step One: Determine the Technology Standard (Top Priority)

1. RF (Radio Frequency) 8.2 MHz (Most common in the market)
✅ Advantages: Lower unit cost; wide range of suppliers; suitable for mass-market apparel, fast fashion, and children's clothing.
Limitations: Susceptible to shielding by metal (e.g., metal zippers, metal embellishments, aluminized linings); labels must not be folded or twisted.

2. AM (Acousto-Magnetic) 58 kHz (Preferred for mid-to-high-end apparel and garments with metal accessories)
✅ Advantages: Superior resistance to metal interference; low false alarm rates; supports wider detection aisles; recommended for coats, leather jackets, and garments with metal hardware.
Limitations: Higher label cost compared to RF.

Hard Rule: Purchase sew-in labels that match the technology standard of the store's existing anti-theft equipment.
II. Distinguishing Between Two Types of Sew-in EAS Tags (Mainstream for Apparel)

1) Fabric-Encapsulated Sew-in EAS Soft Tags (Most common; industry standard)

Structure: The EAS magnetic core is encapsulated within polyester or nylon webbing, with sewing margins on both sides; they are stitched directly onto the garment, similar to a care label.

• Thickness: 0.3–0.6 mm; soft to the touch

• Common sizes: 20×60 mm, 18×50 mm (customizable)
✅ Suitable for: T-shirts, shirts, knitwear, dresses, lingerie, sportswear, children's clothing, lightweight fabrics
✅ Advantages: Discreet, non-irritating to the skin, integrated sewing during manufacturing; the tag remains permanently inside the garment after purchase
⚠️ Limitations: Not suitable for prolonged high-temperature washing, tumble drying, or dry cleaning; washing temperatures >60°C or frequent dry cleaning can cause internal component failure
Best for: Casual wear suitable for standard-temperature washing and not requiring dry cleaning

2) Wash-Resistant Specialty Sew-in EAS Tags (Washable/Dry-cleanable)

Encapsulated in waterproof, sealed TPU; withstands washing at 40–60°C and standard dry cleaning processes
✅ Suitable for: Suits, wool coats, trench coats, and affordable luxury garments requiring dry cleaning
Cost is 25%–50% higher than standard webbing versions
Note the distinction: RFID care labels (used for inventory management) are NOT the same as EAS anti-theft sew-in tags; they serve independent functions and cannot replace one another.

III. Selecting Tags Based on Fabric & Craftsmanship

1. Lightweight/Delicate Fabrics (Silk, Chiffon, Fine Knit, Modal, Lingerie)

• Selection: Ultra-thin sew-in EAS tag (thickness ≤ 0.35mm).

• Recommendation: Choose the narrow 18×50mm version; sew into the side seam allowance to avoid visible bulges.

• Pitfall to Avoid: Do not use thick tags, as they can leave visible impressions on the fabric surface.

2. Heavy Fabrics (Denim, Canvas, Wool/Tweed, Outerwear)

• Selection: Standard 20×60mm sew-in tag.

• Note: If the garment features extensive metal rivets or zippers, prioritize AM (Acousto-Magnetic) sew-in tags to minimize signal shielding.

3. Leather/PU Leather Garments

• Priority: TPU-encapsulated, washable AM sew-in tag.

• Placement: Sew into the lining layer; do not stitch directly onto the leather surface to prevent tearing the material.

4. Infant and Children's Clothing

Mandatory Requirements:

• Fully enclosed edges with no hard, sharp corners; choose soft webbing-encapsulated styles.

• No exposed hard structures; must be securely stitched to prevent detachment and choking hazards.

• Placement: Inside the hem; avoid sensitive areas on the back.
IV. Key Process and Sewing Requirements (Selection & Compatibility)

1. Sewing Clearance
A blank sewing area of 5–8 mm must be reserved at both ends of the tag; the sewing needle must not pierce the central induction coil. Piercing the coil will render the tag unusable.

2. Prohibited Actions
Folding, twisting, or creasing the tag;
Sewing multiple tags in an overlapping manner;
Placement directly against metal-lined fabric or metal-threaded elastic bands (maintain a distance of ≥1.5 cm from metal components).

3. Washing Process Compatibility

• Standard cold-water washing only → Standard woven sew-in tag

• Dry cleaning or high-temperature washing required → Waterproof, wash-resistant TPU tag
Mandatory sample wash test: Test using the factory's full washing process to verify that deactivation and alarm functions remain operational.
V. Cost and Business Model Decision Guide

1. Fast fashion, budget apparel, and high-volume items
RF (Radio Frequency) woven sew-in tags; single-use; deactivated at checkout; tag remains permanently inside the garment, eliminating the need for manual removal of hard tags at the store.

2. Mid-to-high-end apparel, coats, leather jackets, and garments with extensive metal accessories
AM (Acousto-Magnetic) wash-resistant sew-in tags; reduces the risk of missed alarms.

3. If tag recyclability/reuse is required:
Do not use soft sew-in tags (which are single-use); instead, use traditional attachable EAS hard tags.
VI. Simplified Selection Checklist (Ready-to-Use)

1. Confirm store EAS system: RF 8.2MHz or AM 58kHz

2. Garment care requirements: Water wash only vs. Dry-cleanable

3. Fabric thickness: Choose ultra-thin sizes for lightweight fabrics

4. Presence of extensive metal embellishments: Metal present → Prioritize AM

5. Prototype testing: Wash test + store pedestal alarm test

6. Technical drawing specifications: Tag dimensions, sewing "no-go" zones (puncture-free areas), and sewing placement

If you provide details such as the garment category (knitwear, suits, children's wear), care requirements (dry cleaning), and the store's EAS system (RF or AM), I can directly recommend specific tag specifications and sewing locations.