Waterproof protection
True waterproofing through an expansion process treatment keeps seams sealed in wet conditions.
- Free shipping
- 14-day easy returns
- Secure checkout
- Quality guaranteed
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Why customers love it
Waterproof thread that takes on the toughest outdoor jobs
This heavy-duty bonded polyester thread delivers outstanding waterproof performance and long-lasting durability, making it the perfect choice for demanding sewing projects in marine, outdoor, and industrial settings.
- True waterproofing through an expansion process treatment
- SP cotton core balances strength and flexibility
- UV resistant and resistant to salt and alkali corrosion
- Heavy-duty construction for canvas, sails, and leather
- Works for machine and hand sewing
- 1000-yard spool for large projects
Built for the toughest sewing jobs
Weather-ready durability
UV resistant and resistant to salt and alkali corrosion, so it holds up in harsh marine and outdoor environments.
Handles heavy fabrics
Heavy-duty construction is designed for tough materials like canvas, sails, and leather.
Plenty of thread
A long 1000-yard spool is ideal for large or multiple projects without frequent rethreading.
Specs
The details that matter
Built to last outdoors, season after season.
- Product Type
- Bonded Polyester Thread
- Length
- 1000 yards
- Color
- Shade Blue
- Core
- SP cotton core
- Treatment
- Waterproof expansion process
Our worry-free shopping promise
If your order arrives damaged, defective, or not as described, contact us within 14 days and we will make it right with a replacement or refund.
Frequently asked questions
Everything you might want to know before you order.
Can I use this thread with a sewing machine?
Yes, this thread is suitable for both machine and hand sewing applications, giving you flexibility depending on your project and equipment.
What projects is this thread best suited for?
This thread is perfect for sewing sails, tents, waterproof clothing, bags, and repairing outdoor gear or awnings, making it a versatile choice for marine, outdoor, and industrial projects.
How much thread is on the spool?
The thread comes on a long 1000-yard spool, which is ideal for large or multiple projects, so you won't need to replace it frequently.
What makes this thread strong yet flexible?
The thread features an SP cotton core structure that provides an optimal balance of strength and flexibility, helping it perform reliably under demanding conditions.
How does the waterproofing work?
True waterproofing is achieved through an expansion process treatment, which helps the thread resist moisture and maintain performance in wet environments.
Shipping & returns
Shipping
- Delivers to United States (based on your selected country/region).
- Estimated delivery: 3–15 business days after dispatch.
- Shipping cost: Free.
Returns
You can request a return within 14 days after delivery. Standard returns have a €4.00 EUR (approximately $4.66 USD) flat-rate return shipping fee, deducted from your refund. Return shipping is free for items that arrived damaged, defective, or incorrect. Items should be unused and in original packaging where possible. Contact us before sending anything back.