Mosquitoes and other blood-suckers have soured many a good fishing day. No more. Simms’ BugStopperTM Shirt equipped with odorless, water-based, and biodegradable No Fly ZoneTM technology provides a veritable force field against stinging insects for bug-free fishing comfort.

• UPF 50+ sun protection
• UPF protection is inherent in the fabric and will not diminish due to laundering
• No Fly Zone™ insect-repellent technology offers full coverage with unprecedented durability and long-lasting performance (70+ washings)
• New lighter, breathable fabric
• Fully expandable collar for extraordinary insect and sun protection
• Two fly box compatible chest pockets & interior license holder pocket
• Off-shoulder seams for added comfort
• Sun Cuff design lengthens sleeve over back of hand to provide greater sun protection
• Articulated sleeve design allows for greater ease-of-casting
• SOLID - 100% Polyester Mini-Ripstop, PLAID - 57% Polyester/43% Micro-check plaid - both with COR3 and NFZ
• Approximate weight: 8 oz

In a select group of sportswear and hats, we've combined our COR3™ technology with the insect repellent technology from Burlington® Labs - No Fly Zone™. No Fly Zone™ is a permethrin-based insect repellent (odorless, water-based and biodegradable) tha offers excellent protection from multiple species of crawling and flying insect. This package of COR3 and No Fly Zone technologies provides you with maximum sun protection (UPF 50), insect repellent, moisture-management and anti-odor performance in sportswear made specifically for anglers. Burlington® Labs utilizes a patented process, one of the industry's safest, to bind the insect repellent to the fabric. The consistent application of the repellent to the fabric also ensures unprecedented performance and durability.

Products using the COR3™ Technology fabric finish have a UPF rating of 30 or greater, properties to minimize odor and outstanding wicking performance for important moisture management. The anti-odor finish helps control odors caused by a wide range of microorganisms (mold, mildew, algae, yeast) is compatible with virtually all fabrics. All of our performance cotton clothing utilizing COR3™ also feature COR3™ EZ. The "EZ" means easy care and indicates that garments featuring this treatment will travel well and resist wrinkles.