Valley Forge Koralex II Polyester American Flag | Outdoor U.S. Flag

The Valley Forge Koralex II is a spun polyester American flag that combines the rich texture of cotton with the weather resistance of synthetic fiber. Koralex II's two-ply construction gives it a heavier hand and more traditional look than standard nylon, while still holding up to outdoor conditions that would degrade a cotton flag in weeks.

Each flag features embroidered stars, sewn stripes, and a sturdy canvas header with brass grommets. The spun polyester weave creates a matte finish that photographs well and looks distinguished on commercial and institutional flagpoles.

Why Koralex II?

Spun polyester fills a specific niche: customers who want the classic, rich appearance of a cotton flag without the maintenance and replacement costs. The two-ply weave resists UV fading better than nylon and holds color in direct sunlight. Koralex II is heavier than nylon, so it needs moderate wind to fly fully, but it rewards that weight with a fuller, more substantial drape.

Specifications

• Material: Koralex II two-ply spun polyester
• Construction: Embroidered stars, sewn stripes
• Header: Canvas with brass grommets
• Available sizes: 3x5 through 12x18
• Best for: Commercial, institutional, and ceremonial outdoor display
• Made in the USA by Valley Forge Flags

Looking for a lighter flag that flies in less wind? Our Eder Endura-Nylon American flag is the best option for residential poles and moderate climates. Need maximum durability? The Eder Poly-Max is built for sustained high-wind environments.