Seamless Ribbed Workout Tank Top | OEM/ODM Manufacturer Specs & Technical Data Sheet

The Seamless Ribbed Workout Tank Top (Style Code: ST-RT-01) is engineered specifically for performance activewear brands, fitness apparel distributors, and private-label brand owners. Produced using automated Santoni circular knitting technology, this garment features a tubular body design that eliminates lateral seams to reduce skin friction and provide uniform 360-degree stretch. The engineered multi-yarn ribbed structure delivers targeted elasticity, ergonomic body-mapping, and reliable breathability for intensive fitness applications. Available for flexible OEM/ODM contract manufacturing with verified quality control systems.

Key Features

Tubular Seamless Architecture: Eliminates lateral torso seams, significantly minimizing chafing and enhancing structural durability under high mechanical stress and repeated industrial laundering.

Engineered Ribbed Texturing: Multi-yarn ribbed knit architecture offers high modulus elasticity, adapting dynamically to core movements while retaining shape memory.

Moisture Management Technology: Hydrophilic yarn cross-section treatment accelerates capillary sweat dispersion and evaporation, maintaining a dry micro-climate during high-intensity training (HIIT).

Targeted Compression Zones: Strategic rib tension variations provide light-to-moderate bust support and torso stabilization without restricting diaphragmatic breathing.

Anti-Roll Hem Stability: Finished with a flat-locked, reinforced bottom hem to prevent ride-up during inverted postures or overhead functional movements.

Technical Specifications

Parameter	Specification Details
Style Code	ST-RT-01
Standard Fabric Composition	78% Nylon 6,6, 22% Spandex (Customizable GRS-certified Recycled Nylon or Bamboo-viscose blends available)
Fabric Weight (GSM)	240–280 GSM (Medium weight, non-see-through guarantee under maximum elongation)
Knitting Technology	Santoni 14-gauge / 16-gauge high-speed circular knitting looms
Elasticity & Recovery	Up to 180% elongation capacity with ≥98% immediate elastic recovery rate (Tested per internal laboratory multi-cycle protocols)
Color Fastness Rating	Grade 4–5 (Tested per AATCC 61 home laundering & AATCC 15 perspiration standards)
Dimensional Stability	Post-wash shrinkage controlled to <3% via computerized thermal heat-setting
Size Range	XS to 2XL (Graded per ASTM D5585 standard sizing charts or custom client CAD specs)
Minimum Order Quantity (MOQ)	500 pcs per colorway / Style (200 pcs available for stock yarn colors)

Materials & Construction Logic

Yarn Selection & Integrity: Manufactured using high-tenacity multifilament Nylon 6,6 paired with high-recovery elastane cores. This combination resists fiber degradation caused by body oils, pool chlorine, and industrial wash cycles.

Automated Circular Knitting: Formed on Santoni seamless machinery in a continuous tubular loop, reducing fabric cutting waste by up to 15% compared to traditional cut-and-sew garments.

Strap & Seam Reinforcement: Double-layered ribbed shoulder straps distribute vertical load evenly, preventing shoulder digging and strap elongation over extended wear cycles.

Thermal Heat-Setting Process: Finished via a computerized 180°C heat-set stabilization process, locking in structural dimensions and ensuring post-wash shrinkage remains strictly below 3%.

Sizes & Customization Options

We provide comprehensive OEM/ODM manufacturing services tailored to your technical requirements:

Dimensional Grading: Full adherence to US/EU sizing matrices or custom proprietary CAD grading charts.

Sustainable Material Alternatives: Upgradable to Global Recycled Standard (GRS) certified recycled nylon, REPREVE blends, or moisture-wicking bamboo active yarns (accompanied by GRS Transaction Certificates upon request).

Private Label Branding Solutions:

Heat-transfer printed interior neck labels for tagless comfort.
Woven pip-tags on the lower left hem.
Custom branded hangtags and biodegradable/compostable LDPE polybag packaging.

Color Matching Accuracy: Pantone TCX matching with a minimum 95% visual accuracy threshold verified via computerized spectrophotometer testing.

Applications & End-Use Suitability

Gym & Strength Training: Provides surface abrasion resistance against barbell knurling and durable stretch during heavy compound movements (e.g., squats, deadlifts).

Yoga & Pilates: Unrestricted range of motion and breathable ribbed elasticity designed for static postures and floor flexibility work.

Running & Cardio: Optimized thermal regulation properties prevent sweat accumulation and chafing during distance training.

Athleisure & Lifestyle Retail: Clean, minimalist silhouette matching current retail street-fitness trends.

Quality Control & Inspection Standards

Production runs follow a strict AQL 2.5 (Acceptable Quality Limit) sampling standard across four mandatory verification checkpoints:
Yarn Inspection: Incoming raw filament spools undergo tensile strength, twist, and denier verification.
Knitting Monitoring: Continuous electronic drop-stitch and tension monitoring on Santoni looms to detect structural anomalies instantly.
Laboratory Physical Testing: In-house testing for burst strength (ASTM D3786), pilling resistance (ISO 12945-2), and multi-cycle stretch recovery.
Final 100% QC: Manual inspection of finished pieces covering thread trimming, bilateral symmetry, dimensional tolerance (±1 cm), and heat-seal durability.

Packaging & Export Logistics

Standard Export Packaging: Individual items folded flat and packed in biodegradable LDPE self-seal polybags (10 pcs per intermediate bundle, 100 pcs per double-walled export carton).
Carton Specifications: 5-layer corrugated master cartons engineered to resist moisture and drop-impact during global container transit.
Standard OEM/ODM Workflow:

Tech pack evaluation & quotation (<24 hours).
Counter sample development (7–10 days).
Bulk yarn dyeing & automated knitting production (25–30 days).
Third-party inspection cooperation (SGS / Intertek accepted upon request).

Frequently Asked Questions

Q: What is the standard lead time for bulk manufacturing?

A: Standard bulk production requires 25 to 30 days following sample approval and yarn confirmation. Express delivery schedules can be scheduled based on current factory loading.

Q: Can you match custom Pantone colors for low trial quantities?

A: Custom Pantone TCX dyeing requires a minimum of 500 pcs per colorway. Factory stock yarn colors are available for lower trial orders starting at 200 pcs.

Q: How do you prevent the ribbed fabric from sagging after repeated wear?

A: We utilize high-modulus Spandex wrapped in high-tenacity Nylon, finished with a precise 180°C heat-setting stabilization process that locks the elastic memory of the knit structure.

Q: Are pre-production samples (PPS) available prior to bulk production?

A: Yes. Physical pre-production samples are manufactured and shipped via international air courier for client dimension, color, and hand-feel sign-off before mass production starts.

Q: What factory compliance and quality certifications do you hold?

A: Our production facility operates under ISO 9001 quality management standards, BSCI social compliance auditing, and GRS certification for sustainable material production lines.

Q: Do you support drop-shipping or individual consumer order fulfillment?

A: No. We operate strictly as a B2B bulk manufacturer and wholesale OEM/ODM supplier for activewear brands, corporate buyers, and regional distributors.

Request a Bulk Quote

Ready to develop your private label seamless activewear line? Submit your technical specifications, target quantities, and custom packaging requirements to receive a detailed FOB or CIF quotation within 24 hours.
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