SP-SEAL50 Thermal Waterproof Breathable Fabric by the Yard
SP-SEAL50 Thermal Waterproof Breathable Fabric by the Yard - Black / Yard is backordered and will ship as soon as it is back in stock.
Fabric estimater
Fabric estimater
Fabric Yardage Estimator for Clothing & Activewear
Use our fabric estimator to calculate how many yards of fabric you need for common garments like t-shirts, swimwear, dresses, leggings, and more. Perfect for designers, manufacturers, and DIY projects working with spandex fabric by the yard, stretch fabrics, and performance materials.

Fabric Yardage Guide
- Functional T-Shirt: 2.5–4 yards
- Swimwear: 1–2.5 yards
- Performance 2nd Layer: 3–4 yards
- Dress: 2–6 yards
- Yoga Pants & Bras: 2–4 yards
- Men’s Swim Trunks: 1–2.5 yards
- Yoga Leggings: 2–4 yards
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Care Information
Care Information
Fabric Care Instructions for Spandex & Activewear
Proper care is essential to maintain the quality, stretch, and color of your fabric. Follow these washing and care guidelines to extend the life of your garments and materials.

General Fabric Care Guidelines
- Wash at 40°C (104°F) or lower
- Do not bleach
- Do not wring
- Do not dry clean
- Do not iron
- Do not wet clean
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Pickup available
Pickup available
- Pickup available at 2425 S Eastern ave, Commerce, CA, 90040
- Monday to Thursday from 8:30 am to 4:30 pm
Friday from 8:00 am to 4:00 pm - Go to store
Payment & Security
Payment methods
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SP-SEAL50 Thermal Waterproof Breathable Fabric by the Yard – Technical Soft Shell Performance Fabric
SP-SEAL50 Thermal Waterproof Breathable Fabric is a premium technical performance fabric engineered for extreme weather gear, diving suits, outdoor sportswear, and thermal performance apparel. Designed for performance fabrics, this advanced soft shell fabric combines waterproof protection, breathability, stretch flexibility, and thermal insulation for demanding outdoor environments and high-performance applications.
Constructed from a durable blend of 87% Polyester, 10% TPU Membrane, and 3% Spandex DWR, this heavyweight technical fabric delivers weather resistance, flexibility, and comfort while maintaining durability for active movement and cold-weather performance. With a substantial 400 GSM weight and a width of 58 inches, SP-SEAL50 is built for reliable protection in extreme conditions.
Key Features of SP-SEAL50 Thermal Waterproof Breathable Fabric
- Content: 87% Polyester / 10% TPU Membrane / 3% Spandex DWR
- Weight: 400 GSM
- Width: 58 inches
- Waterproof Protection: TPU membrane helps shield against rain, snow, and moisture.
- Breathable Performance: Helps reduce overheating and maintain comfort during activity.
- Stretch Flexibility: Spandex construction supports movement and mobility.
- Thermal Fleece Comfort: Fleece-backed structure provides warmth and insulation in cold environments.
- DWR Finish: Durable water-repellent surface enhances weather resistance.
Why Choose SP-SEAL50?
This advanced thermal soft shell fabric combines weather protection, insulation, and flexibility, making it ideal for golf fabric, athleisure fabric, and technical outdoor apparel collections.
Its breathable waterproof membrane helps maintain comfort during physical activity while the fleece backing provides warmth and insulation for cold-weather sportswear and performance outerwear.
Perfect For
- Diving suits
- Outdoor sportswear
- Thermal jackets
- Performance outerwear
- Cold-weather apparel
- Extreme weather gear
- Technical activewear
- Spandex fleece performance projects
Why You'll Love It
The heavyweight fleece-backed construction provides reliable warmth and weather protection while maintaining breathable comfort and flexibility for movement-focused garments. Its waterproof TPU membrane and DWR finish help keep wearers protected in challenging outdoor environments.
Perfect for technical jackets, thermal sportswear, outdoor performance apparel, diving applications, and weather-resistant outerwear, SP-SEAL50 delivers durability, flexibility, insulation, and advanced protection for high-performance apparel design.
Explore more from our Spandex Fleece Pro Stretch, New Arrivals, and Golf Fabric collections.
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100% USA Cotton
Single Jersey Fabric
135 GSM Weight
Width: 72-74 inches
Dye-to-Match Finish
Machine wash cold
Tumble dry low
Do not bleach
Wash inside out
Sportswear tops
First layers & base layers
Cycling wear
High-performance t-shirts
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